The flavor of four different brands of chocolate ice cream were rated from 1 to 9. Which test should be used to analyze the data?
A) Mann-Whitney test
B) Wilcoxon matched-pairs signed-ranks test
C) Kruskal-Wallis test
D) Spearman test

Question

Quizplus · Accepted Answer

The Kruskal-Wallis test should be used to analyze the data because there are more than two groups being compared (four different brands of chocolate ice cream) and the data is ordinal (rated from 1 to 9). The Mann-Whitney test and Wilcoxon matched-pairs signed-ranks test are both used for comparing two groups, while the Spearman test is used to test for correlation between two variables.

The Flavor of Four Different Brands of Chocolate Ice Cream