Dr. Afzal 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, he should calculate an estimate of the _____.
A)critical value
B)effect size
C)null effect
D)halo effect

Question

Quizplus · Accepted Answer

The estimate of effect size would allow Dr. Afzal to determine how large the difference in test scores is between the two groups (those who work less than 10 hours per week and those who work more than 10 hours per week). This would give a measure of the practical significance of the relationship between work hours and test scores.

Dr Afzal Finds That Students Who Work Less Than 10