A correlated-groups design reduces error variability by reducing error due to
A) measurement errors.
B) extraneous variation.
C) individual differences.
D) All of the above.

Question

Quizplus · Accepted Answer

A correlated-groups design, such as a repeated measures or matched groups design, primarily reduces error variability by controlling for individual differences, as the same participants or matched participants are used across conditions.

A Correlated-Groups Design Reduces Error Variability by Reducing Error Due