If the experimentwise alpha for three tests is .05,then what is the value for testwise alpha?
A) .05
B) .02
C) .15
D) there is not enough information to answer this question

Question

Quizplus · Accepted Answer

The experimentwise alpha value is the overall probability of making a Type I error in all three tests combined, which is .05. To find the testwise alpha value, we need to divide the experimentwise alpha value by the number of tests (i.e., Bonferroni correction): .05/3 = .0167, which is approximately .02. Therefore, the best choice is B because it represents the correct calculation of the testwise alpha value.

If the Experimentwise Alpha for Three Tests Is