Module Tests.MannWhitneyU

module MannWhitneyU: sig .. end

val two_sample_independent : 'a array ->
       'a array ->
       ?alternative:Tests.test_alternative ->
       ?correction:bool -> unit -> Tests.test_result

Mann-Whitney U test (also known as Mann-Whitney-Wilcoxon test and Wilcoxon rank sum test) is a non-paramteric test, which evaluates the null hypothesis that two independent samples have equal medians.

References

Gravetter, Frederick J. and Larry B. Wallnau. "Statistics for the behavioral sciences". Wadsworth Publishing Company, 2006.
David J. Sheskin. "Handbook of Parametric and Nonparametric Statistical Procedures", 3rd edition. CRC Press, 2003.