What is indicated by a large variance for a sample of difference scores?
A)a consistent treatment effect and a high likelihood of a significant difference
B)a consistent treatment effect and a low likelihood of a significant difference
C)an inconsistent treatment effect and a high likelihood of a significant difference
D)an inconsistent treatment effect and a low likelihood of a significant difference

Question

What is indicated by a large variance for a sample of difference scores?​
A)a consistent treatment effect and a high likelihood of a significant difference​
B)​a consistent treatment effect and a low likelihood of a significant difference
C)​an inconsistent treatment effect and a high likelihood of a significant difference
D)​an inconsistent treatment effect and a low likelihood of a significant difference

Quizplus · Accepted Answer

A large variance in difference scores suggests that the treatment effect is not consistent across the sample, leading to a lower likelihood of identifying a significant difference due to the increased variability.

What Is Indicated by a Large Variance for a Sample