The major benefit of random assignment is it
A) reduces the plausibility of alternative explanations for the observed effects.
B) makes it possible to observe the effects of an independent variable on another variable.
C) ensures that the sample chosen for a study is similar to the population from which the sample was drawn.
D) equates the groups before the experimental treatment begins.
E) a and d

Question

Quizplus · Accepted Answer

Random assignment both reduces the plausibility of alternative explanations for the observed effects and also equates the groups before the experimental treatment begins. Therefore, the best choice is E, which includes both options. Option A alone is not as complete because it does not address the equating of groups, and option D alone is not as complete because it does not address the reduction of alternative explanations for observed effects. Options B and C are incorrect as they do not describe the main benefit of random assignment.

The Major Benefit of Random Assignment Is It