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The Wilcoxon rank sum test, also known as Mann-Whitney U test, is a non-parametric rank test to assess whether one of two samples has larger values than the other.

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Adaptive sample size for determining the significance of difference between two non-parametr...

I recommend this chapter in Daniel Lakens online book Improving your statistical inferences. The problem you need to be aware of when looking at data multiple times is inflated type-1 error rates. Or …
Vilgot Huhn's user avatar