The Wilcoxon rank sum test will accurately test the hypotheses H₀: median₁= median₂ vs H_a: median₁ median₂as long as what additional assumption is met? A)Both populations have distributions of the same shape. B)Both populations come from a Normal distribution. C)One of the populations comes from a Normal distribution. D)None of the above

Question

The Wilcoxon rank sum test will accurately test the hypotheses H₀: median₁= median₂ vs H_a: median₁ > median₂as long as what additional assumption is met? A)Both populations have distributions of the same shape. B)Both populations come from a Normal distribution. C)One of the populations comes from a Normal distribution. D)None of the above

Quizplus · Accepted Answer

The Wilcoxon rank sum test assumes that the two populations have distributions of the same shape for the comparison of medians to be meaningful, even though they do not need to follow a Normal distribution.

The Wilcoxon Rank Sum Test Will Accurately Test the Hypotheses