Suppose you want to find out if using cell phones while driving a car affects the likelihood of having an accident.The number of hours that each participant slept the night before the
Driving test would be a(n)__________variable.
A) independent
B) control
C) extraneous
D) dependent

Question

Quizplus · Accepted Answer

The number of hours slept the night before is an extraneous variable because it is a factor that may affect the likelihood of having an accident, but it is not the variable of interest in the study. The variable of interest is the use of cell phones while driving, which would be the independent variable. The dependent variable would be the likelihood of having an accident. A control variable is a variable that is held constant throughout the study to eliminate its potential impact on the outcome, but the number of hours slept is not a control variable in this case.

Suppose You Want to Find Out If Using Cell Phones