The Wilcoxon rank sum test is used to test the hypothesis that the probability distributions
associated with two populations are equivalent.

Question

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The Wilcoxon rank sum test is a non-parametric statistical test that compares the median of two independent samples to assess whether their populations have different distributions. It is used when the assumption of normality for the data cannot be met, providing a way to test for differences in the central tendency (median) of two populations without assuming a specific distribution shape.

The Wilcoxon Rank Sum Test Is Used to Test the Hypothesis