Extraneous variables
A) reduce power and increase the likelihood of a Type 2 error.
B) increase power and reduce the likelihood of a Type 2 error.
C) reduce power and reduce the likelihood of a Type 2 error.
D) increase power and increase the likelihood of a Type 2 error.

Question

Quizplus · Accepted Answer

Extraneous variables introduce variability into the data that is not related to the variables being studied, which can reduce the statistical power of a study. This reduction in power makes it harder to detect a true effect if one exists, thereby increasing the likelihood of a Type 2 error, which occurs when a true effect is not detected.

Extraneous Variables