Which nonparametric test is used to detect nonrandomness in sequential observations?
A)Wald-Wolfowitz one-sample runs test
B)Wilcoxon signed-rank test
C)Wilcoxon rank sum (Mann-Whitney) test
D)Kruskal-Wallis test

Question

Quizplus · Accepted Answer

The Wald-Wolfowitz one-sample runs test is used specifically to test for nonrandomness in sequential observations. It examines whether the sequence of values alternates frequently between high and low values or if there are long runs of values above or below the mean. Therefore, option A is the best choice for this question. Options B, C, and D are all rank-based tests that are used for testing differences between groups or for comparing a single group to a known population distribution, and are not specifically designed to test for nonrandomness in sequential observations.

Which Nonparametric Test Is Used to Detect Nonrandomness in Sequential