The purpose of a control variable is to _____.
A) help interpret the relationship between variables
B) control for outliers
C) provide a comparison for the results
D) establish precision
E) all of the above

Question

Quizplus · Accepted Answer

The purpose of a control variable is to help interpret the relationship between variables. It allows the researcher to measure the effect of the independent variable on the dependent variable while holding other variables constant. Controlling for outliers, providing a comparison for the results, and establishing precision are all potential benefits of using a control variable, but they are not the primary purpose.

The Purpose of a Control Variable Is to _____