The next few questions are based on the following summary table.

If we compared Time 1 (baseline) against the next time (Time 2) and then against the last time (follow-up), we would run the Bonferroni at
A) α = .05.
B) α = .10.
C) α = .025.
D) α = .01.

Question

The next few questions are based on the following summary table.

If we compared Time 1 (baseline) against the next time (Time 2) and then against the last time (follow-up), we would run the Bonferroni at
A) α = .05. 
B) α = .10. 
C) α = .025. 
D) α = .01.

Quizplus · Accepted Answer

When comparing Time 1 against Time 2 and then against follow-up, we are making two comparisons. To control the overall Type I error rate at .05, we need to adjust the alpha level for each comparison, resulting in a Bonferroni-corrected alpha level of .025 for each comparison. Therefore, the correct choice is C.

The Next Few Questions Are Based on the Following Summary