Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs
===================================================================
diff -u -r49bbac8914b80005625cc41f2dee8a4812b67ab8 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs	(.../DesignVariable.cs)	(revision 49bbac8914b80005625cc41f2dee8a4812b67ab8)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DesignVariable.cs	(.../DesignVariable.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -25,7 +25,7 @@
 
 namespace Ringtoets.Common.Data.Probabilistics
 {
-    public abstract class DesignVariable<TDistributionType> where TDistributionType : IDistribution
+    public abstract class DesignVariable<TDistributionType> where TDistributionType : IDistributionBase
     {
         private TDistributionType distribution;
 
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DeterministicDesignVariable.cs
===================================================================
diff -u -rb7563238aa805cb6207e948a97f6fcc9e52c92b2 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DeterministicDesignVariable.cs	(.../DeterministicDesignVariable.cs)	(revision b7563238aa805cb6207e948a97f6fcc9e52c92b2)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/DeterministicDesignVariable.cs	(.../DeterministicDesignVariable.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -26,7 +26,7 @@
     /// <summary>
     /// This class defines a design variable for a distribution.
     /// </summary>
-    public class DeterministicDesignVariable<T> : DesignVariable<T> where T : IDistribution
+    public class DeterministicDesignVariable<T> : DesignVariable<T> where T : IDistributionBase
     {
         private readonly double deterministicValue;
 
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistribution.cs	(.../IDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistribution.cs	(.../IDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -28,17 +28,17 @@
     /// This object represents a probabilistic distribution.
     /// </summary>
     /// <seealso cref="IVariationCoefficientDistribution"/>
-    public interface IDistribution : ICloneable
+    public interface IDistribution : IDistributionBase
     {
         /// <summary>
         /// Gets or sets the mean (expected value, E(X)) of the distribution.
         /// </summary>
-        RoundedDouble Mean { get; set; }
+        new RoundedDouble Mean { get; set; }
 
         /// <summary>
         /// Gets or sets the standard deviation (square root of the Var(X)) of the distribution.
         /// </summary>
         /// <exception cref="ArgumentOutOfRangeException">Standard deviation is less than 0.</exception>
-        RoundedDouble StandardDeviation { get; set; }
+        new RoundedDouble StandardDeviation { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistributionBase.cs
===================================================================
diff -u
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistributionBase.cs	(revision 0)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IDistributionBase.cs	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -0,0 +1,46 @@
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using Core.Common.Base.Data;
+
+namespace Ringtoets.Common.Data.Probabilistics
+{
+    public interface IDistributionBase : ICloneable
+    {
+        /// <summary>
+        /// Gets the mean (expected value, E(X)) of the distribution.
+        /// </summary>
+        RoundedDouble Mean { get; }
+
+        /// <summary>
+        /// Gets the standard deviation (square root of the Var(X)) of the distribution.
+        /// </summary>
+        RoundedDouble StandardDeviation { get; }
+
+        /// <summary>
+        /// Gets the coefficient of variation (CV, also known as relative standard
+        /// deviation (SRD). Defined as standard deviation / |E(X)|) of the distribution.
+        /// </summary>
+        /// <exception cref="DivideByZeroException">Thrown when <see cref="Mean"/> is 0.</exception>
+        RoundedDouble CoefficientOfVariation { get; }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/ILogNormalDistribution.cs
===================================================================
diff -u
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/ILogNormalDistribution.cs	(revision 0)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/ILogNormalDistribution.cs	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -0,0 +1,35 @@
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using Core.Common.Base.Data;
+
+namespace Ringtoets.Common.Data.Probabilistics
+{
+    public interface ILogNormalDistribution : IDistributionBase
+    {
+        /// <summary>
+        /// Gets or sets the shift of the normal distribution which is the log of the log-normal distribution.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when the shift is larger than the mean.</exception>
+        RoundedDouble Shift { get; set; }
+    }
+}
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IVariationCoefficientDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IVariationCoefficientDistribution.cs	(.../IVariationCoefficientDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/IVariationCoefficientDistribution.cs	(.../IVariationCoefficientDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -28,21 +28,21 @@
     /// This object represents a probabilistic distribution.
     /// </summary>
     /// <seealso cref="IDistribution"/>
-    public interface IVariationCoefficientDistribution : ICloneable
+    public interface IVariationCoefficientDistribution : IDistributionBase
     {
         /// <summary>
         /// Gets or sets the mean (expected value, E(X)) of the distribution.
         /// </summary>
         /// <remarks>As <see cref="CoefficientOfVariation"/> cannot be negative, the absolute
         /// value of the mean is used when the standard deviation needs to be calculated.</remarks>
-        RoundedDouble Mean { get; set; }
+        new RoundedDouble Mean { get; set; }
 
         /// <summary>
         /// Gets or sets the coefficient of variation (CV, also known as relative standard
         /// deviation (SRD). Defined as standard deviation / |E(X)|) of the distribution.
         /// </summary>
         /// <exception cref="ArgumentOutOfRangeException">Thrown when coefficient of variation
         /// is less than 0.</exception>
-        RoundedDouble CoefficientOfVariation { get; set; }
+        new RoundedDouble CoefficientOfVariation { get; set; }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistribution.cs	(.../LogNormalDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistribution.cs	(.../LogNormalDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -29,7 +29,7 @@
     /// Class representing a log-normal distribution expressed in terms of standard deviation.
     /// </summary>
     /// <seealso cref="VariationCoefficientLogNormalDistribution"/>
-    public class LogNormalDistribution : IDistribution
+    public class LogNormalDistribution : IDistribution, ILogNormalDistribution
     {
         private RoundedDouble mean;
         private RoundedDouble standardDeviation;
@@ -61,7 +61,7 @@
             // Initialize mean, standard deviation and shift of the normal distribution which is the log of the 
             // log-normal distribution with scale parameter mu=0, shape parameter sigma=1 and location parameter theta=0.
             mean = new RoundedDouble(numberOfDecimalPlaces, Math.Exp(-0.5));
-            standardDeviation = new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt((Math.Exp(1) - 1)*Math.Exp(1)));
+            standardDeviation = new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt((Math.Exp(1) - 1) * Math.Exp(1)));
             shift = new RoundedDouble(numberOfDecimalPlaces);
         }
 
@@ -140,6 +140,14 @@
             }
         }
 
+        public RoundedDouble CoefficientOfVariation
+        {
+            get
+            {
+                return new RoundedDouble(StandardDeviation.NumberOfDecimalPlaces, StandardDeviation / Mean);
+            }
+        }
+
         public object Clone()
         {
             return MemberwiseClone();
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistributionDesignVariable.cs
===================================================================
diff -u -r977a58268db81a93ad74f6079b41cf40d43fb1aa -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistributionDesignVariable.cs	(.../LogNormalDistributionDesignVariable.cs)	(revision 977a58268db81a93ad74f6079b41cf40d43fb1aa)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/LogNormalDistributionDesignVariable.cs	(.../LogNormalDistributionDesignVariable.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -27,13 +27,14 @@
     /// <summary>
     /// This class defines a design variable for a log-normal distribution.
     /// </summary>
-    public class LogNormalDistributionDesignVariable : PercentileBasedDesignVariable<LogNormalDistribution>
+    public class LogNormalDistributionDesignVariable<TDistribution> : PercentileBasedDesignVariable<TDistribution>
+        where TDistribution : ILogNormalDistribution
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="LogNormalDistributionDesignVariable"/> class.
+        /// Initializes a new instance of the <see cref="LogNormalDistributionDesignVariable{T}"/> class.
         /// </summary>
         /// <param name="distribution">A log-normal distribution.</param>
-        public LogNormalDistributionDesignVariable(LogNormalDistribution distribution) : base(distribution) {}
+        public LogNormalDistributionDesignVariable(TDistribution distribution) : base(distribution) {}
 
         public override RoundedDouble GetDesignValue()
         {
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistribution.cs	(.../NormalDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistribution.cs	(.../NormalDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -87,6 +87,14 @@
             }
         }
 
+        public RoundedDouble CoefficientOfVariation
+        {
+            get
+            {
+                return new RoundedDouble(StandardDeviation.NumberOfDecimalPlaces, StandardDeviation / Mean);
+            }
+        }
+
         public object Clone()
         {
             return MemberwiseClone();
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs
===================================================================
diff -u -r977a58268db81a93ad74f6079b41cf40d43fb1aa -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs	(.../NormalDistributionDesignVariable.cs)	(revision 977a58268db81a93ad74f6079b41cf40d43fb1aa)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/NormalDistributionDesignVariable.cs	(.../NormalDistributionDesignVariable.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -26,13 +26,14 @@
     /// <summary>
     /// This class defines a design variable for a normal distribution.
     /// </summary>
-    public class NormalDistributionDesignVariable : PercentileBasedDesignVariable<NormalDistribution>
+    public class NormalDistributionDesignVariable<TDistribution> : PercentileBasedDesignVariable<TDistribution>
+        where TDistribution : IDistributionBase
     {
         /// <summary>
-        /// Initializes a new instance of the <see cref="NormalDistributionDesignVariable"/> class.
+        /// Initializes a new instance of the <see cref="NormalDistributionDesignVariable{T}"/> class.
         /// </summary>
         /// <param name="distribution">A normal distribution.</param>
-        public NormalDistributionDesignVariable(NormalDistribution distribution) : base(distribution) {}
+        public NormalDistributionDesignVariable(TDistribution distribution) : base(distribution) {}
 
         public override RoundedDouble GetDesignValue()
         {
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/PercentileBasedDesignVariable.cs
===================================================================
diff -u -re03950c62ccfad90eefe8076d668767f69c90a8e -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/PercentileBasedDesignVariable.cs	(.../PercentileBasedDesignVariable.cs)	(revision e03950c62ccfad90eefe8076d668767f69c90a8e)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/PercentileBasedDesignVariable.cs	(.../PercentileBasedDesignVariable.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -34,7 +34,7 @@
     /// </summary>
     /// <typeparam name="TDistributionType">The type of the underlying distribution from which a value is 
     /// derived.</typeparam>
-    public abstract class PercentileBasedDesignVariable<TDistributionType> : DesignVariable<TDistributionType> where TDistributionType : IDistribution
+    public abstract class PercentileBasedDesignVariable<TDistributionType> : DesignVariable<TDistributionType> where TDistributionType : IDistributionBase
     {
         private static readonly Range<double> percentileValidityRange = new Range<double>(0, 1);
         private double percentile;
Fisheye: Tag ab330857f161d3f884db508d80a2dd0ade36434f refers to a dead (removed) revision in file `Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientDesignVariable.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientLogNormalDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientLogNormalDistribution.cs	(.../VariationCoefficientLogNormalDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientLogNormalDistribution.cs	(.../VariationCoefficientLogNormalDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -30,10 +30,11 @@
     /// of variation.
     /// </summary>
     /// <seealso cref="LogNormalDistribution"/>
-    public class VariationCoefficientLogNormalDistribution : IVariationCoefficientDistribution
+    public class VariationCoefficientLogNormalDistribution : IVariationCoefficientDistribution, ILogNormalDistribution
     {
         private RoundedDouble mean;
         private RoundedDouble coefficientOfVariation;
+        private RoundedDouble shift;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="VariationCoefficientLogNormalDistribution"/> class,
@@ -54,9 +55,31 @@
         {
             mean = new RoundedDouble(numberOfDecimalPlaces, 1.0);
             coefficientOfVariation = new RoundedDouble(numberOfDecimalPlaces, 1.0);
+            shift = new RoundedDouble(numberOfDecimalPlaces);
         }
 
         /// <summary>
+        /// Gets or sets the shift of the normal distribution which is the log of the log-normal distribution.
+        /// </summary>
+        /// <exception cref="ArgumentOutOfRangeException">Thrown when the shift is larger than the mean.</exception>
+        public RoundedDouble Shift
+        {
+            get
+            {
+                return shift;
+            }
+            set
+            {
+                RoundedDouble newShift = value.ToPrecision(shift.NumberOfDecimalPlaces);
+                if (newShift > Mean)
+                {
+                    throw new ArgumentOutOfRangeException(null, Resources.LogNormalDistribution_Shift_may_not_exceed_Mean);
+                }
+                shift = newShift;
+            }
+        }
+
+        /// <summary>
         /// Gets or sets the mean (expected value, E(X)) of the distribution.
         /// </summary>
         /// <exception cref="ArgumentOutOfRangeException">Expected value is less than or equal to 0.</exception>
@@ -100,6 +123,14 @@
             }
         }
 
+        public RoundedDouble StandardDeviation
+        {
+            get
+            {
+                return Mean * CoefficientOfVariation;
+            }
+        }
+
         public object Clone()
         {
             return MemberwiseClone();
Fisheye: Tag ab330857f161d3f884db508d80a2dd0ade36434f refers to a dead (removed) revision in file `Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientLogNormalDistributionDesignVariable.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientNormalDistribution.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientNormalDistribution.cs	(.../VariationCoefficientNormalDistribution.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Probabilistics/VariationCoefficientNormalDistribution.cs	(.../VariationCoefficientNormalDistribution.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -87,6 +87,14 @@
             }
         }
 
+        public RoundedDouble StandardDeviation
+        {
+            get
+            {
+                return Mean * CoefficientOfVariation;
+            }
+        }
+
         public object Clone()
         {
             return MemberwiseClone();
Index: Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj
===================================================================
diff -u -r49bbac8914b80005625cc41f2dee8a4812b67ab8 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj	(.../Ringtoets.Common.Data.csproj)	(revision 49bbac8914b80005625cc41f2dee8a4812b67ab8)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/Ringtoets.Common.Data.csproj	(.../Ringtoets.Common.Data.csproj)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -61,8 +61,8 @@
     <Compile Include="Hydraulics\HydraulicBoundaryDatabase.cs" />
     <Compile Include="Hydraulics\HydraulicBoundaryLocation.cs" />
     <Compile Include="Hydraulics\HydraulicBoundaryLocationOutput.cs" />
-    <Compile Include="Probabilistics\VariationCoefficientLogNormalDistributionDesignVariable.cs" />
-    <Compile Include="Probabilistics\VariationCoefficientDesignVariable.cs" />
+    <Compile Include="Probabilistics\IDistributionBase.cs" />
+    <Compile Include="Probabilistics\ILogNormalDistribution.cs" />
     <Compile Include="Probabilistics\DeterministicDesignVariable.cs" />
     <Compile Include="Probabilistics\IVariationCoefficientDistribution.cs" />
     <Compile Include="Probabilistics\PercentileBasedDesignVariable.cs" />
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DesignVariableTest.cs
===================================================================
diff -u -r8905298103eb01ce13dd5c1a2f267f879d4fda3e -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DesignVariableTest.cs	(.../DesignVariableTest.cs)	(revision 8905298103eb01ce13dd5c1a2f267f879d4fda3e)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DesignVariableTest.cs	(.../DesignVariableTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -84,9 +84,9 @@
             mocks.VerifyAll(); // Expect no calls on mocks
         }
 
-        private class SimpleDesignVariable : DesignVariable<IDistribution>
+        private class SimpleDesignVariable : DesignVariable<IDistributionBase>
         {
-            public SimpleDesignVariable(IDistribution distribution) : base(distribution) {}
+            public SimpleDesignVariable(IDistributionBase distribution) : base(distribution) {}
 
             public override RoundedDouble GetDesignValue()
             {
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DeterministicDesignVariableTest.cs
===================================================================
diff -u -r5803275ea1237501fd8a9fdd9d1f795d98d0aa4c -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DeterministicDesignVariableTest.cs	(.../DeterministicDesignVariableTest.cs)	(revision 5803275ea1237501fd8a9fdd9d1f795d98d0aa4c)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/DeterministicDesignVariableTest.cs	(.../DeterministicDesignVariableTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -36,12 +36,12 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var distributionMock = mocks.Stub<IDistribution>();
-            distributionMock.Mean = new RoundedDouble();
+            var distributionMock = mocks.Stub<IDistributionBase>();
+            distributionMock.Stub(d => d.Mean).Return(new RoundedDouble());
             mocks.ReplayAll();
 
             // Call
-            var designVariable = new DeterministicDesignVariable<IDistribution>(distributionMock);
+            var designVariable = new DeterministicDesignVariable<IDistributionBase>(distributionMock);
 
             // Assert
             Assert.AreSame(distributionMock, designVariable.Distribution);
@@ -53,7 +53,7 @@
         public void ParameteredConstructor_DistributionIsNull_ThrowArgumentNullException()
         {
             // Call
-            TestDelegate call = () => new DeterministicDesignVariable<IDistribution>(null);
+            TestDelegate call = () => new DeterministicDesignVariable<IDistributionBase>(null);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -69,10 +69,10 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var distributionMock = mocks.StrictMock<IDistribution>();
+            var distributionMock = mocks.StrictMock<IDistributionBase>();
             mocks.ReplayAll();
 
-            var designVariable = new DeterministicDesignVariable<IDistribution>(distributionMock);
+            var designVariable = new DeterministicDesignVariable<IDistributionBase>(distributionMock);
 
             // Call
             TestDelegate call = () => designVariable.Distribution = null;
@@ -95,11 +95,11 @@
             int numberOfDecimalPlaces = 2;
 
             var mocks = new MockRepository();
-            var distributionMock = mocks.Stub<IDistribution>();
-            distributionMock.Mean = new RoundedDouble(numberOfDecimalPlaces);
+            var distributionMock = mocks.Stub<IDistributionBase>();
+            distributionMock.Stub(d => d.Mean).Return(new RoundedDouble(numberOfDecimalPlaces));
             mocks.ReplayAll();
 
-            var designVariable = new DeterministicDesignVariable<IDistribution>(distributionMock, testValue);
+            var designVariable = new DeterministicDesignVariable<IDistributionBase>(distributionMock, testValue);
 
             // Call
             var designValue = designVariable.GetDesignValue();
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionDesignVariableTest.cs
===================================================================
diff -u -r2857b234df4622cdaf80bbc75abc58af36667347 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionDesignVariableTest.cs	(.../LogNormalDistributionDesignVariableTest.cs)	(revision 2857b234df4622cdaf80bbc75abc58af36667347)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionDesignVariableTest.cs	(.../LogNormalDistributionDesignVariableTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -22,6 +22,7 @@
 using System;
 using Core.Common.Base.Data;
 using NUnit.Framework;
+using Rhino.Mocks;
 using Ringtoets.Common.Data.Probabilistics;
 using Ringtoets.Common.Data.TestUtil;
 
@@ -34,18 +35,21 @@
         public void ParameteredConstructor_ValidLogNormalDistribution_ExpectedValues()
         {
             // Setup
-            var logNormalDistribution = new LogNormalDistribution(2);
+            var mocks = new MockRepository();
+            var logNormalDistribution = mocks.Stub<ILogNormalDistribution>();
+            mocks.ReplayAll();
 
             // Call
-            var designValue = new LogNormalDistributionDesignVariable(logNormalDistribution);
+            var designValue = new LogNormalDistributionDesignVariable<ILogNormalDistribution>(logNormalDistribution);
 
             // Assert
             Assert.AreSame(logNormalDistribution, designValue.Distribution);
             Assert.AreEqual(0.5, designValue.Percentile);
+            mocks.VerifyAll();
         }
 
         /// <summary>
-        /// Tests the <see cref="LogNormalDistributionDesignVariable.GetDesignValue"/>
+        /// Tests the <see cref="LogNormalDistributionDesignVariable{TDistribution}.GetDesignValue"/>
         /// against the values calculated with the excel sheet in WTI-33 (timestamp: 27-11-2015 10:27).
         /// </summary>
         /// <param name="expectedValue">MEAN.</param>
@@ -66,13 +70,16 @@
         {
             // Setup
             const int numberOfDecimalPlaces = 4;
-            var logNormalDistribution = new LogNormalDistribution(numberOfDecimalPlaces)
-            {
-                Mean = (RoundedDouble) expectedValue,
-                StandardDeviation = (RoundedDouble) Math.Sqrt(variance)
-            };
 
-            var designVariable = new LogNormalDistributionDesignVariable(logNormalDistribution)
+            var mocks = new MockRepository();
+            var logNormalDistribution = mocks.Stub<ILogNormalDistribution>();
+            logNormalDistribution.Stub(l => l.Mean).Return(new RoundedDouble(numberOfDecimalPlaces, expectedValue));
+            logNormalDistribution.Stub(l => l.StandardDeviation).Return(new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt(variance)));
+            mocks.ReplayAll();
+
+            logNormalDistribution.Shift = new RoundedDouble(numberOfDecimalPlaces, 0);
+
+            var designVariable = new LogNormalDistributionDesignVariable<ILogNormalDistribution>(logNormalDistribution)
             {
                 Percentile = percentile
             };
@@ -83,10 +90,11 @@
             // Assert
             Assert.AreEqual(numberOfDecimalPlaces, result.NumberOfDecimalPlaces);
             Assert.AreEqual(expectedResult, result, result.GetAccuracy());
+            mocks.VerifyAll();
         }
 
         /// <summary>
-        /// Tests the <see cref="LogNormalDistributionDesignVariable.GetDesignValue"/>
+        /// Tests the <see cref="LogNormalDistributionDesignVariable{TDistribution}.GetDesignValue"/>
         /// against the values calculated with the excel sheet in WTI-688 (timestamp: 04-08-2016 09:59).
         /// </summary>
         /// <param name="expectedValue">MEAN.</param>
@@ -109,14 +117,16 @@
         {
             // Setup
             const int numberOfDecimalPlaces = 4;
-            var logNormalDistribution = new LogNormalDistribution(numberOfDecimalPlaces)
-            {
-                Mean = (RoundedDouble) expectedValue,
-                StandardDeviation = (RoundedDouble) Math.Sqrt(variance),
-                Shift = (RoundedDouble) shift
-            };
 
-            var designVariable = new LogNormalDistributionDesignVariable(logNormalDistribution)
+            var mocks = new MockRepository();
+            var logNormalDistribution = mocks.Stub<ILogNormalDistribution>();
+            logNormalDistribution.Stub(l => l.Mean).Return(new RoundedDouble(numberOfDecimalPlaces, expectedValue));
+            logNormalDistribution.Stub(l => l.StandardDeviation).Return(new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt(variance)));
+            mocks.ReplayAll();
+
+            logNormalDistribution.Shift = (RoundedDouble) shift;
+
+            var designVariable = new LogNormalDistributionDesignVariable<ILogNormalDistribution>(logNormalDistribution)
             {
                 Percentile = percentile
             };
@@ -142,14 +152,15 @@
         {
             // Setup
             const int numberOfDecimalPlaces = 6;
-            var logNormalDistribution = new LogNormalDistribution(numberOfDecimalPlaces)
-            {
-                Mean = (RoundedDouble) expectedValue,
-                StandardDeviation = (RoundedDouble) Math.Sqrt(variance),
-                Shift = (RoundedDouble) 0.0
-            };
+            var mocks = new MockRepository();
+            var logNormalDistribution = mocks.Stub<ILogNormalDistribution>();
+            logNormalDistribution.Stub(l => l.Mean).Return(new RoundedDouble(numberOfDecimalPlaces, expectedValue));
+            logNormalDistribution.Stub(l => l.StandardDeviation).Return(new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt(variance)));
+            mocks.ReplayAll();
 
-            var designVariable = new LogNormalDistributionDesignVariable(logNormalDistribution)
+            logNormalDistribution.Shift = (RoundedDouble) 0;
+
+            var designVariable = new LogNormalDistributionDesignVariable<ILogNormalDistribution>(logNormalDistribution)
             {
                 Percentile = percentile
             };
@@ -158,7 +169,7 @@
             RoundedDouble result = designVariable.GetDesignValue();
 
             // Assert
-            RoundedDouble expectedResult = new LogNormalDistributionDesignVariable(logNormalDistribution)
+            RoundedDouble expectedResult = new LogNormalDistributionDesignVariable<ILogNormalDistribution>(logNormalDistribution)
             {
                 Percentile = percentile
             }.GetDesignValue();
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionTest.cs
===================================================================
diff -u -rf2a9c4ae5677049bb5d34537984c114965daa251 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionTest.cs	(.../LogNormalDistributionTest.cs)	(revision f2a9c4ae5677049bb5d34537984c114965daa251)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/LogNormalDistributionTest.cs	(.../LogNormalDistributionTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -39,6 +39,7 @@
 
             // Assert
             Assert.IsInstanceOf<IDistribution>(distribution);
+            Assert.IsInstanceOf<ILogNormalDistribution>(distribution);
 
             int numberOfDecimalPlaces = RoundedDouble.MaximumNumberOfDecimalPlaces;
             double expectedAccuracy = Math.Pow(10.0, -numberOfDecimalPlaces);
@@ -62,6 +63,7 @@
 
             // Assert
             Assert.IsInstanceOf<IDistribution>(distribution);
+            Assert.IsInstanceOf<ILogNormalDistribution>(distribution);
 
             double expectedAccuracy = Math.Pow(10.0, -numberOfDecimalPlaces);
 
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionDesignVariableTest.cs
===================================================================
diff -u -r5b8f476716cb75977616203318fa250f608fe7a5 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionDesignVariableTest.cs	(.../NormalDistributionDesignVariableTest.cs)	(revision 5b8f476716cb75977616203318fa250f608fe7a5)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionDesignVariableTest.cs	(.../NormalDistributionDesignVariableTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -22,6 +22,7 @@
 using System;
 using Core.Common.Base.Data;
 using NUnit.Framework;
+using Rhino.Mocks;
 using Ringtoets.Common.Data.Probabilistics;
 
 namespace Ringtoets.Common.Data.Test.Probabilistics
@@ -33,18 +34,21 @@
         public void ParameterdConstructor_ValidLogNormalDistribution_ExpectedValues()
         {
             // Setup
-            var normalDistribution = new NormalDistribution(3);
+            var mocks = new MockRepository();
+            var normalDistribution = mocks.Stub<IDistributionBase>();
+            mocks.ReplayAll();
 
             // Call
-            var designValue = new NormalDistributionDesignVariable(normalDistribution);
+            var designValue = new NormalDistributionDesignVariable<IDistributionBase>(normalDistribution);
 
             // Assert
             Assert.AreSame(normalDistribution, designValue.Distribution);
             Assert.AreEqual(0.5, designValue.Percentile);
+            mocks.VerifyAll();
         }
 
         /// <summary>
-        /// Tests the <see cref="NormalDistributionDesignVariable.GetDesignValue"/>
+        /// Tests the <see cref="NormalDistributionDesignVariable{TDistribution}.GetDesignValue"/>
         /// against the values calculated with the excel sheet in WTI-33 (timestamp: 27-11-2015 10:27).
         /// </summary>
         /// <param name="expectedValue">MEAN.</param>
@@ -64,13 +68,15 @@
             double expectedResult)
         {
             // Setup
-            var normalDistribution = new NormalDistribution(4)
-            {
-                Mean = (RoundedDouble) expectedValue,
-                StandardDeviation = (RoundedDouble) Math.Sqrt(variance)
-            };
+            const int numberOfDecimalPlaces = 4;
 
-            var designVariable = new NormalDistributionDesignVariable(normalDistribution)
+            var mocks = new MockRepository();
+            var normalDistribution = mocks.Stub<IDistributionBase>();
+            normalDistribution.Stub(d => d.Mean).Return(new RoundedDouble(numberOfDecimalPlaces, expectedValue));
+            normalDistribution.Stub(d => d.StandardDeviation).Return(new RoundedDouble(numberOfDecimalPlaces, Math.Sqrt(variance)));
+            mocks.ReplayAll();
+
+            var designVariable = new NormalDistributionDesignVariable<IDistributionBase>(normalDistribution)
             {
                 Percentile = percentile
             };
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionTest.cs
===================================================================
diff -u -rf2a9c4ae5677049bb5d34537984c114965daa251 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionTest.cs	(.../NormalDistributionTest.cs)	(revision f2a9c4ae5677049bb5d34537984c114965daa251)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/NormalDistributionTest.cs	(.../NormalDistributionTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -38,7 +38,7 @@
             var distribution = new NormalDistribution();
 
             // Assert
-            Assert.IsInstanceOf<IDistribution>(distribution);
+            Assert.IsInstanceOf<IDistributionBase>(distribution);
 
             int numberOfDecimalPlaces = RoundedDouble.MaximumNumberOfDecimalPlaces;
 
@@ -58,7 +58,7 @@
             var distribution = new NormalDistribution(numberOfDecimalPlaces);
 
             // Assert
-            Assert.IsInstanceOf<IDistribution>(distribution);
+            Assert.IsInstanceOf<IDistributionBase>(distribution);
 
             Assert.AreEqual(0.0, distribution.Mean.Value);
             Assert.AreEqual(numberOfDecimalPlaces, distribution.Mean.NumberOfDecimalPlaces);
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/PercentileBasedDesignVariableTest.cs
===================================================================
diff -u -r974fb1eadbd8a630c7a992648ad42ac85ec205b1 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/PercentileBasedDesignVariableTest.cs	(.../PercentileBasedDesignVariableTest.cs)	(revision 974fb1eadbd8a630c7a992648ad42ac85ec205b1)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/PercentileBasedDesignVariableTest.cs	(.../PercentileBasedDesignVariableTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -35,14 +35,14 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var distributionMock = mocks.StrictMock<IDistribution>();
+            var distributionMock = mocks.StrictMock<IDistributionBase>();
             mocks.ReplayAll();
 
             // Call
             var designVariable = new SimpleDesignVariable(distributionMock);
 
             // Assert
-            Assert.IsInstanceOf<DesignVariable<IDistribution>>(designVariable);
+            Assert.IsInstanceOf<DesignVariable<IDistributionBase>>(designVariable);
             Assert.AreSame(distributionMock, designVariable.Distribution);
             Assert.AreEqual(0.5, designVariable.Percentile);
             mocks.VerifyAll(); // Expect no calls on mocks
@@ -59,7 +59,7 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var distributionMock = mocks.StrictMock<IDistribution>();
+            var distributionMock = mocks.StrictMock<IDistributionBase>();
             mocks.ReplayAll();
 
             var designVariable = new SimpleDesignVariable(distributionMock);
@@ -85,7 +85,7 @@
         {
             // Setup
             var mocks = new MockRepository();
-            var distributionMock = mocks.StrictMock<IDistribution>();
+            var distributionMock = mocks.StrictMock<IDistributionBase>();
             mocks.ReplayAll();
 
             var designVariable = new SimpleDesignVariable(distributionMock);
@@ -98,9 +98,9 @@
             mocks.VerifyAll(); // Expect no calls on mocks
         }
 
-        private class SimpleDesignVariable : PercentileBasedDesignVariable<IDistribution>
+        private class SimpleDesignVariable : PercentileBasedDesignVariable<IDistributionBase>
         {
-            public SimpleDesignVariable(IDistribution distribution) : base(distribution) {}
+            public SimpleDesignVariable(IDistributionBase distribution) : base(distribution) {}
 
             public override RoundedDouble GetDesignValue()
             {
Fisheye: Tag ab330857f161d3f884db508d80a2dd0ade36434f refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/VariationCoefficientDesignVariableTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag ab330857f161d3f884db508d80a2dd0ade36434f refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/VariationCoefficientLogNormalDistributionDesignVariableTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/VariationCoefficientLogNormalDistributionTest.cs
===================================================================
diff -u -rf2a9c4ae5677049bb5d34537984c114965daa251 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/VariationCoefficientLogNormalDistributionTest.cs	(.../VariationCoefficientLogNormalDistributionTest.cs)	(revision f2a9c4ae5677049bb5d34537984c114965daa251)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Probabilistics/VariationCoefficientLogNormalDistributionTest.cs	(.../VariationCoefficientLogNormalDistributionTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -40,6 +40,7 @@
 
             // Assert
             Assert.IsInstanceOf<IVariationCoefficientDistribution>(distribution);
+            Assert.IsInstanceOf<ILogNormalDistribution>(distribution);
 
             int numberOfDecimals = RoundedDouble.MaximumNumberOfDecimalPlaces;
 
@@ -60,6 +61,7 @@
 
             // Assert
             Assert.IsInstanceOf<IVariationCoefficientDistribution>(distribution);
+            Assert.IsInstanceOf<ILogNormalDistribution>(distribution);
 
             Assert.AreEqual(numberOfDecimals, distribution.Mean.NumberOfDecimalPlaces);
             Assert.AreEqual(1.0, distribution.Mean.Value);
Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj
===================================================================
diff -u -r49bbac8914b80005625cc41f2dee8a4812b67ab8 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj	(.../Ringtoets.Common.Data.Test.csproj)	(revision 49bbac8914b80005625cc41f2dee8a4812b67ab8)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/Ringtoets.Common.Data.Test.csproj	(.../Ringtoets.Common.Data.Test.csproj)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -74,8 +74,6 @@
     <Compile Include="Hydraulics\HydraulicBoundaryDatabaseTest.cs" />
     <Compile Include="Hydraulics\HydraulicBoundaryLocationOutputTest.cs" />
     <Compile Include="Hydraulics\HydraulicBoundaryLocationTest.cs" />
-    <Compile Include="Probabilistics\VariationCoefficientLogNormalDistributionDesignVariableTest.cs" />
-    <Compile Include="Probabilistics\VariationCoefficientDesignVariableTest.cs" />
     <Compile Include="Probabilistics\DeterministicDesignVariableTest.cs" />
     <Compile Include="Probabilistics\DesignVariableTest.cs" />
     <Compile Include="Probabilistics\TruncatedNormalDistributionTest.cs" />
Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/LimitedPrecisionHelperTest.cs
===================================================================
diff -u -r332fd224ce5cd9c737e72f945271c52ae6d64c0d -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/LimitedPrecisionHelperTest.cs	(.../LimitedPrecisionHelperTest.cs)	(revision 332fd224ce5cd9c737e72f945271c52ae6d64c0d)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil.Test/LimitedPrecisionHelperTest.cs	(.../LimitedPrecisionHelperTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -82,15 +82,17 @@
             Assert.AreEqual(expectedPrecision, accuracy);
         }
 
-        private class SimpleDistribution : IDistribution
+        private class SimpleDistribution : IDistributionBase
         {
             public RoundedDouble Mean { get; set; }
-            public RoundedDouble StandardDeviation { get; set; }
+            public RoundedDouble StandardDeviation { get;  }
+            public RoundedDouble CoefficientOfVariation { get; }
 
             public object Clone()
             {
                 throw new NotImplementedException();
             }
+
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/LimitedPrecisionHelper.cs
===================================================================
diff -u -r2857b234df4622cdaf80bbc75abc58af36667347 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/LimitedPrecisionHelper.cs	(.../LimitedPrecisionHelper.cs)	(revision 2857b234df4622cdaf80bbc75abc58af36667347)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.TestUtil/LimitedPrecisionHelper.cs	(.../LimitedPrecisionHelper.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -42,7 +42,7 @@
         /// Gets the accuracy for a <see cref="IDistribution"/>.
         /// </summary>
         /// <remarks>Assumes that all the parameters of the distribution share the same accuracy.</remarks>
-        public static double GetAccuracy(this IDistribution distribution)
+        public static double GetAccuracy(this IDistributionBase distribution)
         {
             return distribution.Mean.GetAccuracy();
         }
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingSemiProbabilisticDesignValueFactory.cs
===================================================================
diff -u -ra18b7dcb5ed74f0d8ffc9a4d284d98b25816b9b8 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingSemiProbabilisticDesignValueFactory.cs	(.../PipingSemiProbabilisticDesignValueFactory.cs)	(revision a18b7dcb5ed74f0d8ffc9a4d284d98b25816b9b8)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingSemiProbabilisticDesignValueFactory.cs	(.../PipingSemiProbabilisticDesignValueFactory.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -30,15 +30,15 @@
     {
         private static DesignVariable<NormalDistribution> CreateDesignVariable(NormalDistribution distribution, double percentile)
         {
-            return new NormalDistributionDesignVariable(distribution)
+            return new NormalDistributionDesignVariable<NormalDistribution>(distribution)
             {
                 Percentile = percentile
             };
         }
 
         private static DesignVariable<LogNormalDistribution> CreateDesignVariable(LogNormalDistribution distribution, double percentile)
         {
-            return new LogNormalDistributionDesignVariable(distribution)
+            return new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution)
             {
                 Percentile = percentile
             };
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/DesignVariablePropertiesTest.cs
===================================================================
diff -u -r0eef796eb9da995e56fd1e4a61296ec3c25dcfad -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/DesignVariablePropertiesTest.cs	(.../DesignVariablePropertiesTest.cs)	(revision 0eef796eb9da995e56fd1e4a61296ec3c25dcfad)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/DesignVariablePropertiesTest.cs	(.../DesignVariablePropertiesTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -64,7 +64,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             PipingCalculationScenario calculationScenario = PipingCalculationScenarioFactory.CreatePipingCalculationScenarioWithValidInput();
 
@@ -93,7 +93,7 @@
                 Mean = (RoundedDouble) 1,
                 StandardDeviation = (RoundedDouble) 2
             };
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             PipingCalculationScenario calculationScenario = PipingCalculationScenarioFactory.CreatePipingCalculationScenarioWithValidInput();
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/LogNormalDistributionDesignVariablePropertiesTest.cs
===================================================================
diff -u -r0eef796eb9da995e56fd1e4a61296ec3c25dcfad -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/LogNormalDistributionDesignVariablePropertiesTest.cs	(.../LogNormalDistributionDesignVariablePropertiesTest.cs)	(revision 0eef796eb9da995e56fd1e4a61296ec3c25dcfad)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/LogNormalDistributionDesignVariablePropertiesTest.cs	(.../LogNormalDistributionDesignVariablePropertiesTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -50,7 +50,7 @@
         {
             // Setup
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new LogNormalDistributionDesignVariableProperties(designVariable);
@@ -91,7 +91,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new LogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.All,
@@ -116,7 +116,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new LogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
@@ -168,7 +168,7 @@
                 Mean = new RoundedDouble(2, 1),
                 StandardDeviation = new RoundedDouble(2, 2)
             };
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new LogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/NormalDistributionDesignVariablePropertiesTest.cs
===================================================================
diff -u -r0eef796eb9da995e56fd1e4a61296ec3c25dcfad -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/NormalDistributionDesignVariablePropertiesTest.cs	(.../NormalDistributionDesignVariablePropertiesTest.cs)	(revision 0eef796eb9da995e56fd1e4a61296ec3c25dcfad)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/NormalDistributionDesignVariablePropertiesTest.cs	(.../NormalDistributionDesignVariablePropertiesTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -62,7 +62,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new NormalDistribution();
-            var designVariable = new NormalDistributionDesignVariable(distribution);
+            var designVariable = new NormalDistributionDesignVariable<NormalDistribution>(distribution);
 
             // Call
             var properties = new NormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.All,
@@ -87,7 +87,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new NormalDistribution();
-            var designVariable = new NormalDistributionDesignVariable(distribution);
+            var designVariable = new NormalDistributionDesignVariable<NormalDistribution>(distribution);
 
             // Call
             var properties = new NormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
@@ -139,7 +139,7 @@
                 Mean = new RoundedDouble(2, 1),
                 StandardDeviation = new RoundedDouble(2, 2)
             };
-            var designVariable = new NormalDistributionDesignVariable(distribution);
+            var designVariable = new NormalDistributionDesignVariable<NormalDistribution>(distribution);
 
             // Call
             var properties = new NormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs
===================================================================
diff -u -r7d922899412d52bcc7c2f1432589dfcd62d364b4 -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs	(.../PipingInputContextPropertiesTest.cs)	(revision 7d922899412d52bcc7c2f1432589dfcd62d364b4)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs	(.../PipingInputContextPropertiesTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -564,13 +564,13 @@
             RingtoetsPipingSurfaceLine surfaceLine = ValidSurfaceLine(0.0, 4.0);
             StochasticSoilModel soilModel = ValidStochasticSoilModel(0.0, 4.0);
             StochasticSoilProfile soilProfile = soilModel.StochasticSoilProfiles.First();
-            var dampingFactorExit = new LogNormalDistributionDesignVariable(
+            var dampingFactorExit = new LogNormalDistributionDesignVariable<LogNormalDistribution>(
                 new LogNormalDistribution(3)
                 {
                     Mean = (RoundedDouble) 1.55,
                     StandardDeviation = (RoundedDouble) 0.22
                 });
-            var phreaticLevelExit = new NormalDistributionDesignVariable(
+            var phreaticLevelExit = new NormalDistributionDesignVariable<NormalDistribution>(
                 new NormalDistribution(3)
                 {
                     Mean = (RoundedDouble) 1.55,
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/ShiftedLogNormalDistributionDesignVariablePropertiesTest.cs
===================================================================
diff -u -r0eef796eb9da995e56fd1e4a61296ec3c25dcfad -rab330857f161d3f884db508d80a2dd0ade36434f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/ShiftedLogNormalDistributionDesignVariablePropertiesTest.cs	(.../ShiftedLogNormalDistributionDesignVariablePropertiesTest.cs)	(revision 0eef796eb9da995e56fd1e4a61296ec3c25dcfad)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/ShiftedLogNormalDistributionDesignVariablePropertiesTest.cs	(.../ShiftedLogNormalDistributionDesignVariablePropertiesTest.cs)	(revision ab330857f161d3f884db508d80a2dd0ade36434f)
@@ -50,7 +50,7 @@
         {
             // Setup
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new ShiftedLogNormalDistributionDesignVariableProperties(designVariable);
@@ -91,7 +91,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new ShiftedLogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.All,
@@ -116,7 +116,7 @@
             mockRepository.ReplayAll();
 
             var distribution = new LogNormalDistribution();
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new ShiftedLogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
@@ -175,7 +175,7 @@
                 Mean = new RoundedDouble(2, 1),
                 StandardDeviation = new RoundedDouble(2, 2)
             };
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new ShiftedLogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,
@@ -204,7 +204,7 @@
                 StandardDeviation = new RoundedDouble(2, 2),
                 Shift = new RoundedDouble(2, 0.3)
             };
-            var designVariable = new LogNormalDistributionDesignVariable(distribution);
+            var designVariable = new LogNormalDistributionDesignVariable<LogNormalDistribution>(distribution);
 
             // Call
             var properties = new ShiftedLogNormalDistributionDesignVariableProperties(DistributionPropertiesReadOnly.None,