One disadvantage of the Wilcoxon rank sum test,as compared to the t test,is that Wilcoxon rank sum test is much less powerful.

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The Wilcoxon rank sum test can be more powerful than the t-test when the assumptions of the t-test are not met, particularly when the data are not normally distributed or when there are outliers, as it is a non-parametric test that does not assume normal distribution of the data.

One Disadvantage of the Wilcoxon Rank Sum Test,as Compared to the T