The probability of a Type II error is usually denoted by
A) beta (β).
B) alpha (α).
C) power.
D) the effect size ( g ).

Question

Quizplus · Accepted Answer

The probability of a Type II error is denoted by beta (β). This error occurs when we fail to reject a false null hypothesis. In other words, we accept the null hypothesis when it is actually false. Alpha (α) is the probability of a Type I error, which occurs when we reject a true null hypothesis. Power is the probability of correctly rejecting a false null hypothesis. The effect size ( g ) is a measure of the magnitude of the difference between two groups or conditions.

The Probability of a Type II Error Is Usually Denoted