Assigning participants to experimental or control groups by chance is known as
A)random assignment.
B)lottery assignment.
C)nonrandom assignment.
D)convenience assignment.

Question

Quizplus · Accepted Answer

Random assignment ensures that each participant has an equal chance of being assigned to either the experimental or control group, which helps to minimize confounding variables and increase the internal validity of the study. Lottery assignment, nonrandom assignment, and convenience assignment do not involve chance and therefore do not provide this same level of control.

Assigning Participants to Experimental or Control Groups by Chance Is