Class WilcoxonRankSumDistribution

  • All Implemented Interfaces:
    ProbabilityDistribution

    public class WilcoxonRankSumDistribution
    extends Object
    implements ProbabilityDistribution
    Compute the exact distribution of the Wilcoxon rank sum test statistic. Let x and y be two random, independent samples of sizes M and N. The Wilcoxon rank sum statistic is the number of all pairs (x[i], y[j]) for which y[j] is not greater than x[i]. This statistic takes values between 0 and M * N.

    The R equivalent functions are dwilcox, pwilcox, qwilcox, rwilcox.