Using designs with more than two levels of an independent variable allows researchers to
A)compare more than two kinds of treatment in one study.
B)compare two or more kinds of treatment with a control group.
C)compare a placebo group to the control and experimental groups.
D)accomplish all of the other alternatives.

Question

Quizplus · Accepted Answer

Using designs with more than two levels of an independent variable allows researchers to accomplish all of the other alternatives: compare more than two kinds of treatment, compare treatments with a control group, and compare a placebo group to the control and experimental groups.

Using Designs with More Than Two Levels of an Independent