In order to maximize the likelihood that experimental and control groups are similar before any treatment has begun,researchers typically use
A) descriptive statistics.
B) random assignment.
C) sampling.
D) observational studies.

Question

Quizplus · Accepted Answer

Random assignment is a technique used by researchers to place participants into experimental and control groups using randomization. This process helps ensure that each group is similar in all respects before the treatment begins, thereby maximizing the validity of the experimental results by reducing selection bias.

In Order to Maximize the Likelihood That Experimental and Control