An instructor gives weekly tests to one class and just one midterm exam to another class. Both classes get the same final exam. The instructor compares performances on the final exam to see whether the weekly tests affected students' performance. What is the independent variable in this experiment?

Question

Quizplus · Accepted Answer

The independent variable is the variable that the researcher manipulates or changes in the experiment. In this case, the independent variable is the number of tests before the final, as this is the only variable that is different between the two classes being compared. The other variables (students' performance on the final exam, the difficulty of each test, and the number of students in each class) are all potential dependent variables that may be affected by the number of tests given before the final exam.

An Instructor Gives Weekly Tests to One Class and Just