Editing Mann–Whitney U test (section)

{{italic title|string=U}}
{{short description|Nonparametric test of the null hypothesis}}
{{redirect|Wilcoxon rank-sum test|Wilcoxon signed-rank test|Wilcoxon signed-rank test}}
The '''Mann–Whitney <math>U</math> test''' (also called the '''Mann–Whitney–Wilcoxon''' ('''MWW/MWU'''), '''Wilcoxon rank-sum test''', or '''Wilcoxon–Mann–Whitney test''') is a [[nonparametric statistics|nonparametric]] [[statistical test]] of the [[null hypothesis]] that randomly selected values ''X'' and ''Y'' from two populations have the same distribution. 

Nonparametric tests used on two ''dependent'' samples are the [[sign test]] and the [[Wilcoxon signed-rank test]].