public static TestResult MannWhitneyTest(
	Sample a,
	Sample b
)Public Shared Function MannWhitneyTest ( 
	a As Sample,
	b As Sample
) As TestResultpublic:
static TestResult^ MannWhitneyTest(
	Sample^ a, 
	Sample^ b
)static member MannWhitneyTest : 
        a : Sample * 
        b : Sample -> TestResult The Mann-Whitney test is a non-parametric alternative to Student's t-test (StudentTTest(Sample, Sample)). Essentially, it supposes that the medians of the two samples are equal and tests the likelihood of this null hypothesis. Unlike the t-test, it does not assume that the sample distributions are normal.