Doing successive t tests within the context of a single experiment
A) is theoretically the same as doing an F ratio
B) is theoretically the same as doing a Pearson r
C) is theoretically the same as doing a Spearman r
D) may inflate the alpha error

Question

Quizplus · Accepted Answer

Successive t tests may inflate the alpha error, because as additional tests are conducted, the probability of obtaining at least one significant result by chance increases. Therefore, a correction to the alpha level, such as the Bonferroni correction, should be applied to control for this inflation of Type I error. Choices A, B, and C are incorrect because doing successive t tests is not theoretically the same as calculating an F ratio or either type of correlation coefficient.

Doing Successive T Tests Within the Context of a Single