Which of the following test(s) require(s) an obtained statistic that is equal to or smaller than the critical value in order to reject H₀?
A) Mann-Whitney test
B) Spearman test
C) Wilcoxon matched-pairs signed-rank test
D) Both "a" and "c" above

Question

Quizplus · Accepted Answer

Both the Mann-Whitney test and Wilcoxon matched-pairs signed-rank test are nonparametric tests that require an obtained statistic that is equal to or smaller than the critical value in order to reject the null hypothesis. The Spearman test, on the other hand, is a parametric test that uses a correlation coefficient as the obtained statistic and requires a p-value that is less than the chosen level of significance in order to reject the null hypothesis.

Which of the Following Test(s) Require(s) an Obtained Statistic That