A researcher conducts a study of the effects of drinking or not drinking coffee on calculus test scores in a group of college students. In this study, the presence or absence of coffee is the __________.
A) dependent variable
B) independent variable
C) experimental group
D) sample

Question

Quizplus · Accepted Answer

The presence or absence of coffee is being manipulated by the researcher and is therefore the independent variable in this study, while the calculus test scores are the dependent variable being measured.

A Researcher Conducts a Study of the Effects of Drinking