added mean

src/NetPackageAnalyzer/NetPackageAnalyzer.sln

@@ -27,6 +27,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NuGetInfo", "NuGetInfo\NuGe
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NPA.Resources", "NPA.Resources\NPA.Resources.csproj", "{BA1E9CDB-4241-4910-92F1-4C374D1EE1C7}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Statistical", "Statistical\Statistical.csproj", "{32CE4D49-5C69-441D-A002-1CFC182B1B69}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -81,6 +83,10 @@ Global
 		{BA1E9CDB-4241-4910-92F1-4C374D1EE1C7}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BA1E9CDB-4241-4910-92F1-4C374D1EE1C7}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BA1E9CDB-4241-4910-92F1-4C374D1EE1C7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{32CE4D49-5C69-441D-A002-1CFC182B1B69}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{32CE4D49-5C69-441D-A002-1CFC182B1B69}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{32CE4D49-5C69-441D-A002-1CFC182B1B69}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{32CE4D49-5C69-441D-A002-1CFC182B1B69}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/NetPackageAnalyzer/NetPackageAnalyzerObjects/NetPackageAnalyzerObjects.csproj

@@ -42,6 +42,7 @@
 	  <ProjectReference Include="..\NetPackageAnalyzerDiagram\NetPackageAnalyzerDiagram.csproj" />
 	  <ProjectReference Include="..\NetPackageAnalyzerMetricsMSFT\NetPackageAnalyzerMetricsMSFT.csproj" />
 	  <ProjectReference Include="..\NuGetInfo\NuGetInfo.csproj" />
+	  <ProjectReference Include="..\Statistical\Statistical.csproj" />
 	</ItemGroup>
 	<PropertyGroup>
 

src/NetPackageAnalyzer/NetPackageAnalyzerObjects/ProjectsDict.cs

@@ -1,7 +1,4 @@
-using NetPackageAnalyzeHistory;
-using NetPackageAnalyzerObjects;
-
-namespace NetPackageAnalyzerObjects;
+namespace NetPackageAnalyzerObjects;
 public partial class ProjectsDict : Dictionary<string, ProjectData>
 {
     public ProjectsDict(Dictionary<string, ProjectData> data) : base(data)
@@ -46,7 +43,7 @@ public int MedianCommits(int? year)
             .ToArray();
         if ((data?.Length??0) == 0) return 0;
         ArgumentNullException.ThrowIfNull(data);
-        return Statistical<int>.Median(data.Select(it => it.Value).ToArray());
+        return StatisticalNumbers<int>.Median(data.Select(it => it.Value).ToArray());
 
     }
     public KeyValuePair<string, int>[] FilesWithMaxCommits(int? year)
@@ -86,7 +83,7 @@ public int MedianCommitsForFiles(int? year)
             .Where(it => year == null || it.date.Year == year)
             .Select(it => it.CountFiles())
             .ToArray();
-        var median=Statistical<int>.Median(data);
+        var median=StatisticalNumbers<int>.Median(data);
         return median;
     }
     public Commit[] MaxCommits(int? year)
@@ -116,8 +113,8 @@ public Dictionary<int, int> CommitsMedianFilesPerYear()
             .GroupBy(it => it.date.Year)
             .Select(it => new { 
                 year = it.Key, 
-                median = 
-            Statistical<int>.Median( it.Select(it=>it.CountFiles()).ToArray())
+                median =
+            StatisticalNumbers<int>.Median( it.Select(it=>it.CountFiles()).ToArray())
             })            
             .ToDictionary(it => it.year, it => it.median)
             ;

src/NetPackageAnalyzer/NetPackageAnalyzerObjects/globals.cs

@@ -12,6 +12,8 @@
 global using RSCG_ExportDiagram_Import;
 global using NetPackageAnalyzerMetricsMSFT;
 global using NuGetInfo;
+global using NetPackageAnalyzeHistory;
+global using Statistical;
 
 public static class GlobalsForGenerating
 {

src/NetPackageAnalyzer/NetPackageAnalyzerTests/NetPackageAnalyzerTests.csproj

@@ -26,6 +26,7 @@
   <ItemGroup>
     <ProjectReference Include="..\NetPackageAnalyzerWork\NetPackageAnalyzerDocusaurus.csproj" />
     <ProjectReference Include="..\NuGetInfo\NuGetInfo.csproj" />
+    <ProjectReference Include="..\Statistical\Statistical.csproj" />
   </ItemGroup>
 
   <ItemGroup>

src/NetPackageAnalyzer/NetPackageAnalyzerTests/TestStatistics.cs

@@ -0,0 +1,25 @@
+using Statistical;
+
+namespace NetPackageAnalyzerTests;
+[TestClass]
+public class TestStatistics
+{
+
+    [TestMethod]
+    public void TestMedian()
+    {
+        var values = new int[] { 2, 100,  300, 400, 500 };
+        var median = StatisticalNumbers<int>.Median(values);
+        Assert.AreEqual(300, median);
+    }
+
+    [TestMethod]
+    public void TestMean()
+    {
+        var values = new int[] { 5, 100, 300, 400, 500 };
+        var median = StatisticalNumbers<int>.ArithmeticMean(values);
+        Assert.AreEqual(261, median);
+    }
+
+
+}

src/NetPackageAnalyzer/NetPackageAnalyzerWork/Templates/CommitsPerData.cshtml

@@ -23,7 +23,7 @@
         return;
     };
     var values= ordered.Select(x => hist(x.Value).nrCommits??0).ToArray();
-    var median = Statistical<int>.Median( values.Where(t=>t!=0).Select(it=>it!).ToArray());
+    var median = StatisticalNumbers<int>.Median(values.Where(t => t != 0).Select(it => it!).ToArray());
 
 
     var names = ordered.Select(x => x.Value.NameCSproj()).ToArray();

src/NetPackageAnalyzer/NetPackageAnalyzerWork/globals.cs

@@ -10,6 +10,7 @@
 global using NetPackageAnalyzerDiagram;
 global using RSCG_ExportDiagram_Import;
 global using NetPackageAnalyzeHistory;
+global using Statistical;
 
 
 

src/NetPackageAnalyzer/Statistical/Class1.cs

@@ -0,0 +1,80 @@
+using System.Numerics;
+namespace Statistical;
+
+public static class StatisticalNumbers<T>
+        where T : INumber<T>,IDivisionOperators<T, T, T>
+{
+    public static T Median(T[]? values)
+    {
+        var size = values?.Length ?? 0;
+        if (size == 0)
+        {
+            return T.Zero;
+        }
+        ArgumentNullException.ThrowIfNull(values);
+        if (size == 1)
+        {
+            return values![0];
+        }
+        Array.Sort(values);
+        int mid = size / 2;
+        T median = values[mid];
+        if (size % 2 == 0)
+        {
+            median = (values[mid] + values[mid - 1]);
+            median = median / T.CreateChecked(2);
+        }
+        return median;
+    }
+    public static T ArithmeticMean(T[]? values)
+    {
+        var size = values?.Length ?? 0;
+        if (size == 0)
+        {
+            return T.Zero;
+        }
+        ArgumentNullException.ThrowIfNull(values);
+
+        if(!T.TryParse(size.ToString(), null, out var mid )) {
+            throw new ArgumentException("Cannot parse the size of the array to T");
+        };
+
+
+        if (size == 1)
+        {
+            return values![0];
+        }
+        T res= T.Zero;
+        foreach (var value in values)
+        {
+            res += value;
+        }
+
+        return res / mid;
+
+    }
+
+    public static Tuple<T[], int> Mode(T[]? values)
+    {
+        var size = values?.Length ?? 0;
+        if (size == 0)
+        {
+            return Tuple.Create(new T[] { T.Zero },0);
+        }
+        ArgumentNullException.ThrowIfNull(values);
+
+        var data = values
+            .GroupBy(v=>v)
+            .ToDictionary(v=>v,v=>v.Count());
+
+        var max = data.Max(it=>it.Value);
+        var vals = data
+            .Where(it => it.Value == max)
+            .Select(it => it.Key.Key)
+            .ToArray();
+
+        return Tuple.Create(vals ?? [] , max);
+
+    }
+}
+

src/NetPackageAnalyzer/Statistical/Statistical.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>