If a repeatedmeasures study shows a significant difference b

If a repeated-measures study shows a significant difference between two treatments with a = .01, then you can be sure that ____.

Solution

If a repeated-measures study shows a significant difference between two treatments with a = .01, then you can be sure that ____.

the value of Cohens d is large

a significant effect does not necessarily mean that the effect size will be large

the percentage of variance explained (r2) is large

both Cohens d and r2 are large

r² refers to the amount of variance in one variable that is explained by the other in a Pearson correlation and not connected with repeated-measures study.

Cohen\'s d is used to measure effect size, and not connect with the level of significance.