Data Set 1-3: For her research project, Susan gathered data from 76 students who filled out a questionnaire about exercise and GPA. From the exercise portion, students were classified as sedentary, moderate, or vigorous exercisers. GPA's were expressed in the usual decimal form
-The independent variable was
A) kind of project
B) the number of students who filled out the questionnaire
C) GPA
D) exercise classification.

Question

Quizplus · Accepted Answer

The independent variable is the one that is manipulated or categorized to see its effect on another variable. In this study, exercise classification (sedentary, moderate, or vigorous) is the variable that is categorized to see its effect on GPA, making it the independent variable.

Data Set 1-3: for Her Research Project, Susan Gathered Data