The probability of making at least one type I error across a set of comparison is referred to as ______.

A) total error
B) unpredicted error
C) explained error
D) familywise error

Familywise Error

The familywise error rate is the probability of making one or more false discoveries, or Type I errors, when performing multiple hypotheses tests.

Type I Error

A statistical error occurring when one incorrectly rejects a true null hypothesis, also known as a false positive.

Probability

A measure of the likelihood or chance that a particular event will occur.