If any reasonable person would expect that with 4 trials the last trial is almost certain to be significantly different from the first, then Fisher's LSD test
A) has more protection against a high familywise error rate.
B) has a smaller degree of protection against a high familywise error rate.
C) will lead to a very high familywise error rate.
D) Error rates have nothing to do with the issue.

Question

Quizplus · Accepted Answer

Fisher's LSD test has a smaller degree of protection against a high familywise error rate because it does not take into account the increased probability of making a Type I error when conducting multiple tests on the same data set. With 4 trials, the likelihood of finding a significant difference by chance alone increases, and Fisher's LSD test may falsely identify a significant difference when in reality there is none. Therefore, it is important to use a correction method such as the Bonferroni correction or the false discovery rate adjustment to control for the familywise error rate.

If Any Reasonable Person Would Expect That with 4 Trials