SigStat by Bence Kovari

<PackageReference Include="SigStat" Version="0.2.5" />

 MathHelper

public static class MathHelper
Common mathematical functions used by the SigStat framework
public static double Median(this IEnumerable<double> values)

Calculates the median of the given data series

public static double Min(double d1, double d2, double d3)

Returns the smallest of the three double parameters

public static double StdDiviation(this IEnumerable<double> values)

return standard diviation of a feature values