Dr.Walters finds that students who work less than 10 hours a week have significantly higher test scores than students who work more than 10 hours a week.In order to determine the magnitude of the effect of work hours on test scores,she should calculate a(n)
A) critical value.
B) effect size.
C) null calculation.
D) degree of freedom.

Question

Quizplus · Accepted Answer

Effect size is a statistical measure used to assess the magnitude of an effect. In this case, Dr. Walters needs to calculate the effect size of work hours on test scores to determine the strength of the relationship between the two variables. Options A, C, and D are all important concepts in statistics, but they do not specifically address the question of magnitude of effect.

DrWalters Finds That Students Who Work Less Than 10 Hours