There is increased confidence that random assignment of participants to groups yields equivalent groups when:
A) There is a small sample size
B) Groups are fairly homogeneous
C) There is a control group
D) All of the above

Question

Quizplus · Accepted Answer

When groups are fairly homogeneous, it is more likely that random assignment will yield equivalent groups. Option A is incorrect, as a small sample size can increase the risk of chance differences between groups. Option C is not always necessary for ensuring equivalent groups through random assignment.

There Is Increased Confidence That Random Assignment of Participants to Groups