To distribute the effect of extraneous variables equally among treatments, you should
A) use random assignment of participants to conditions
B) have distributions that are about normal
C) have variances that are about equal
D) all of the descriptive alternatives are correct.

Question

Quizplus · Accepted Answer

Random assignment of participants to conditions helps ensure that extraneous variables are distributed equally among the treatment groups, minimizing their potential impact on the experimental outcome.

To Distribute the Effect of Extraneous Variables Equally Among Treatments