When the within-group variability in a study is small, the likelihood of rejecting the null hypothesis is ______.
A) smaller
B) not changed
C) larger
D) the same

Question

Quizplus · Accepted Answer

When the within-group variability is small, it means that the scores within each group are very similar to each other, making it easier to detect any true differences between groups. This increases the likelihood of rejecting the null hypothesis if there is indeed a true effect or difference.

When the Within-Group Variability in a Study Is Small, the Likelihood