Revisiting the t Test on Ranks as an Alternative to the Wilcoxon Rank-Sum Test

This is the authors' abstract. We don't add key points for this paper.

In comparison with the Student t test, the test on the ranks of scores has been shown to be slightly less powerful than the Wilcoxon Rank-Sum test conducted on the original scores for real smooth and symmetric data sets because it does not provide a correction for ties or continuity. Here it is demonstrated that the t test on ranks is nonetheless superior to the usual t test for real data that are skewed or otherwise severely nonnormally distributed.