Mathematics
Statistics
For which one of the following situations would a Kruskal

For which one of the following situations would a Kruskal

For which one of the following situations would a Kruskal Wallace test be appropriate?
a) Comparing the ratings of a new product on a 5-point Likert scale by a panel of consumers to their ratings of a competitor's product on the same scale.
b) Comparing the sweetness of a diet drink (rated from 1 to 10) as judged by a panel of teenage tasters and a panel of adult tasters.
c) Judging whether the height of the water at high tide at a marina increases more or less consistently as the phase of the moon changes from new to full.
d) Testing whether the distributions of the ratings of a new distance learning course were the same as rated (on the usual 5-point Likert scale) by Freshmen, Sophomores, Juniors, and Seniors who had taken the course.
e) Estimating the association between the value of homes and their age in a community known to have a number of very expensive mansions.

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