Suppose that 6 economists who work for the federal government and 7 university economists were asked to grade the effectiveness of an economic stimulus bill in terms of its ability to increase jobs over the next two years. What nonparametric method is appropriate for testing if the two groups differ in terms of their opinion?
A) Wilcoxon rank-sum test
B) Wilcoxon signed-rank test
C) Spearman's rho test
D) Kruskal-Wallis Test
E) Kendall's tau test

Question

Quizplus · Accepted Answer

The Wilcoxon rank-sum test is appropriate for comparing the ranks of two independent samples, which in this case are the opinions of the 6 economists working for the federal government and the 7 university economists. This test does not assume a normal distribution of the data, making it suitable for nonparametric analysis.

Suppose That 6 Economists Who Work for the Federal Government