After a significant F test, two different pairwise comparison procedures were used to detect the differences between 5 group means. Procedure A detected one significant contrast, whereas procedure B showed that all contrasts are significant. Which procedure is more powerful?
A) procedure A
B) procedure B
C) equally powerful
D) cannot be determined based on the information given

Question

Quizplus · Accepted Answer

Procedure B is more powerful because it detected more significant contrasts, indicating a greater ability to identify differences between group means.

After a Significant F Test, Two Different Pairwise Comparison Procedures