The major purpose of random assignment in an experiment is to:
A)maximize the differences between groups.
B)minimize the differences between groups.
C)control the independent variable.
D)control the dependent variable.

Question

Quizplus · Accepted Answer

Random assignment is used to minimize the differences between groups by ensuring that any variation between them is due to chance rather than systematic factors, such as pre-existing differences in participants. This is important for establishing causality and reducing the impact of extraneous variables on the dependent variable.

The Major Purpose of Random Assignment in an Experiment Is