In a recent national survey, it was learned that the grade point average of college seniors was correlated with their class attendance. In that study, the independent variable was:
A) class attendance.
B) class rank, e.g., senior status.
C) grade point average.
D) the national survey.

Question

Quizplus · Accepted Answer

The independent variable is the variable that is being manipulated or varied in the study. In this case, the independent variable is class attendance since it is being varied to determine its correlation with grade point average. Class rank and the national survey are not being manipulated variables in this study, and grade point average is the outcome variable that is being measured, not manipulated. The independent variable is the variable that is being manipulated in the study. In this case, class attendance is being manipulated (or measured) and its effect on grade point average is being studied. Therefore, class attendance is the independent variable.

In a Recent National Survey, It Was Learned That the Grade