Individuals in Four Different Age Groups Are Asked to Rate

Multiple Choice

Individuals in four different age groups are asked to rate, on a scale of 1 to 10, three flavors of ice creams. Each group has the same number of individuals. Median ratings by the individuals are grouped by the flavor of ice cream and by age group. Which nonparametric test could be used to see if there is a difference in median ratings among the four age groups and three flavors?

A) Wilcoxon signed-rank test
B) Friedman test
C) Mann-Whitney test
D) Kruskal-Wallis test