Multiple comparisons between groups using t tests is discouraged because:
A) The probability of as Type I error is increased
B) The probability of a Type II error is increased
C) The degrees of freedom are substantially increased
D) a and c

Question

Quizplus · Accepted Answer

Multiple comparisons between groups using t tests increases the probability of a Type I error, also known as a false positive. This occurs when we reject the null hypothesis when it is actually true. This is a problem because we want to minimize the chances of coming to incorrect conclusions.

Multiple Comparisons Between Groups Using T Tests Is Discouraged Because