Increasing variance within groups ____ the likelihood of finding a difference between the treatment conditions.
A)increases
B)decreases
C)does not affect
D)increase, then decreases

Question

Increasing variance within groups ____ the likelihood of finding a difference between the treatment conditions.
A)​increases
B)​decreases
C)does not affect
D)​increase, then decreases

Quizplus · Accepted Answer

Increasing variance within groups makes it harder to detect a difference between treatment conditions because it increases the noise in the data, making it more difficult to identify a true effect.

Increasing Variance Within Groups ____ the Likelihood of Finding a Difference