The Mann-Whitney U test is a nonparametric test that measures the degree of association between two variables for which only rank-order data are available.

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The Mann-Whitney U test is a nonparametric test used to compare differences between two independent groups when the dependent variable is either ordinal or continuous, but not normally distributed. It does not measure the degree of association between two variables.

The Mann-Whitney U Test Is a Nonparametric Test That Measures