The Wilcoxon Signed-Rank Test Is

Multiple Choice

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.