In testing whether riding a bicycle at least 30 minutes each day reduces weight, what would be the independent variable?
A) the person's age
B) amount of time bicycling each day
C) the person's weight
D) the person's diet

Question

Quizplus · Accepted Answer

The independent variable is the one that is being manipulated or changed in the study in order to see its effect on the dependent variable. In this case, the independent variable is the amount of time spent bicycling each day, as this is what is being varied to see if weight is reduced. A) the person's age, C) the person's weight, and D) the person's diet are all potential covariates or confounding variables that could affect the relationship between bicycling and weight loss, but they are not the independent variable of interest in this study.

In Testing Whether Riding a Bicycle at Least 30 Minutes