When assigning ranks during a Wilcoxon rank sum test, tied values are each given the mean of the next ranks to be assigned. Which of the following statements is NOT correct regarding this averaging procedure?
A) The procedure is crucial when the tied values belong to the same sample.
B) Although still employed, the procedure is not crucial (and an arbitrary assignment of ranks to tied values would be acceptable) when the tied values belong to the same sample.
C) The procedure is designed to avoid arbitrariness.

Question

Quizplus · Accepted Answer

When tied values belong to the same sample, the specific assignment of ranks does not affect the test statistic, so the procedure is not crucial in this case.

When Assigning Ranks During a Wilcoxon Rank Sum Test, Tied