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Keywords:

  • permutation tests;
  • Fisher-Pitman test;
  • Mann-Whitney U-test;
  • Mantel-Haenszel test;
  • 2 × k contingency table test

Abstract

A simple Fortran Subroutine is given for the exact calculation of permutational distributions for two independent samples. Important special cases are the Fisher-Pitman randomization test, the Mann-Whitney U-test, the Mantel-Haenszel-test and the exact test for 2×k contingency tables. The algorithm needs polynomial time and is of use even for personal- or microcomputers.