FriedmanTest Class

public sealed class FriedmanTest : MultiSampleTest<double>

Public NotInheritable Class FriedmanTest
	Inherits MultiSampleTest(Of Double)

public ref class FriedmanTest sealed : public MultiSampleTest<double>

[<SealedAttribute>]
type FriedmanTest = 
    class
        inherit MultiSampleTest<float>
    end

Inheritance

Object  →  HypothesisTest  →  MultiSampleTest<Double>  →  FriedmanTest

Use the FriedmanTest class to compare three or more related treatments, conditions, or repeated measurements observed on the same matched blocks or subjects. It is the repeated-measures counterpart of the Kruskal-Wallis test and a nonparametric alternative to one-way repeated-measures analysis of variance.

The test ranks treatment values within each block using average ranks for ties, sums those ranks by treatment, and reports the Friedman Q statistic. By default, ties within a block are corrected before the statistic and p-value are reported. The p-value uses the chi-square approximation with k - 1 degrees of freedom, where k is the number of treatments.

Reference