Which of the following is noted as a key to minimizing systematic differences between multigroup design conditions before a study begins?
A) removal of covariates
B) repeated measure design
C) random assignment
D) cluster sampling

Question

Quizplus · Accepted Answer

Random assignment is a fundamental technique used in experimental designs to minimize systematic differences between groups before the study begins. By randomly assigning participants to different groups, researchers can ensure that each group is similar in all respects, except for the intervention being tested, thereby reducing potential biases and confounding variables.

Which of the Following Is Noted as a Key to Minimizing