M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:

A study evaluated the effects of socioeconomic status, race, and sex on performance of high school students on a particular standardized test. Which of the following variables from this study would be considered a dependent variable?
I. standardized test performance
II. socioeconomic status
III. race

A

I only

B

II and III only

C

I and III only

D

I, II and III