Does .NET 4 support any 6-Sigma calculation?

Question

I will need to write an app to run statistical analysis on a DataGrid. Pp and Ppk is easy to do with standard deviation calculation in C#. But Some number such as estimated deviation (rBar/d2) used for Cp and Cpk - that is too complex (for me ) to code. Are there existing libraries, commercial or open source, that I can implement?

Answer 1

Extreme Optimization might be something you are looking for.

Edit
How about SPC Chart?

Answer 2

You might wanna check out Sho, it's a tool for doing stuff with data and it provides a lot of math libraries.

http://channel9.msdn.com/Blogs/Charles/John-Platt-Introduction-to-Sho

http://research.microsoft.com/en-us/projects/sho/

Answer 3

I have used MathNet.Numerics for these type calculations.
https://www.nuget.org/packages/MathNet.Numerics/

https://numerics.mathdotnet.com/
Example for cp and cpk:

public class ProcessPerformance
{
    public static ProcessPerformanceResult Calculate(double[] data,double lsl,double usl,double sigma =3.0,double cpSigma=6.0)
    {
        if(data.Count() ppkLsl ? ppkLsl : ppkUsl;
        var cP = (usl - lsl) / (descriptiveStatistics.StandardDeviation * cpSigma);
        var median = MathNet.Numerics.Statistics.Statistics.Median(data);
        return new ProcessPerformanceResult(){Cp=cP,Cpk=cPk,Median= median, DescriptiveStatistics=descriptiveStatistics};
        
    }
    public class ProcessPerformanceResult
    {
        //https://en.wikipedia.org/wiki/Process_capability_index
        public double Cpk { get; set; }
        public double Cp {get;set;}
        public double Median {get;set;}
        public MathNet.Numerics.Statistics.DescriptiveStatistics DescriptiveStatistics {get;set;}
    }
}