How does the Mann-Whitney U test compare to the Wilcoxon rank-sum test?
- They are identical tests
- They are used for different types of data
- They handle ties differently
- They make different assumptions about the data
The Mann-Whitney U test and the Wilcoxon rank-sum test are essentially the same test, although they use slightly different methods of calculation. Both are non-parametric tests used to determine if two independent samples were drawn from a population with the same distribution.
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