Which of the following is a "robust" test procedure against the violation of distribution assumptions? A) ?²-test of independence B) ?²-test for the differences among more than two proportions C) Wilcoxon rank sum test for difference in medians D) ?²-test of a variance

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The Wilcoxon rank sum test for difference in medians is a non-parametric test and does not assume any particular distribution, making it robust against violations of distribution assumptions. The other options all make assumptions about the underlying distribution and may not be accurate or reliable if those assumptions are violated.

Which of the Following Is a "Robust" Test Procedure Against