Besides randomization, which of the following is a technique used to equalize initial group differences?
A) using heterogeneous population
B) comparing males and females
C) using analysis of covariance
D) ignoring extraneous variables

Question

Quizplus · Accepted Answer

Analysis of covariance (ANCOVA) is a statistical technique used to control for initial group differences by statistically adjusting for the effects of extraneous variables. ANCOVA is a powerful method for detecting differences between groups and can help to eliminate pre-existing group differences that may confound research results. The other options listed are not effective methods for equalizing initial group differences.

Besides Randomization, Which of the Following Is a Technique Used