Let's assume there are sophomores,juniors,and seniors in your marketing research class and we want to know if their average GPAs differ.What is the proper statistical test?
A)t-test
B)z-test
C)Chi-square test
D)Analysis of variance (ANOVA)
E)None of these are correct.

Question

Quizplus · Accepted Answer

The proper statistical test to compare the average GPAs of three or more groups is the Analysis of Variance (ANOVA) test. Therefore, option D is the correct answer. The t-test is used to compare the means of two groups, the z-test is used to test the hypothesis about the mean of a normal distribution, and the chi-square test is used for categorical data.

Let's Assume There Are Sophomores,juniors,and Seniors in Your Marketing Research