The Wilcoxon signed-rank test is:
A)a non-parametric test for examining significant differences between two related samples on a single sample.
B)a non-parametric test for examining significant differences between repeated measurements on a single sample.
C)used as an alternative for a paired samples t-test when the population cannot be assumed to be normally distributed.
D)All of the above.

Question

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The Wilcoxon signed-rank test is a non-parametric test that can be used for examining significant differences between two related samples on a single sample or repeated measurements on a single sample. It is often used as an alternative for a paired samples t-test when the population cannot be assumed to be normally distributed.

The Wilcoxon Signed-Rank Test Is