Let's assume there are freshman, seniors, and graduate students in your class and we want to know if their average GPAs differ. What is the proper statistical test?
A) t test
B) Means differences test
C) Summarization of means test
D) ANOVA
E) z test

Question

Quizplus · Accepted Answer

ANOVA (Analysis of Variance) is the appropriate statistical test to determine if the average GPAs of three or more groups (in this case, freshman, seniors, and graduate students) are statistically different. It allows for a comparison of means while taking into account the variability within each group, and can determine if any observed differences are statistically significant.

Let's Assume There Are Freshman, Seniors, and Graduate Students in Your