The Dean believes that the placement of motivational posters on the walls in classrooms will lead to better grades. To test his hypothesis, he randomly assigns certain classrooms to have the posters while others do not. He then records average grades of classes held in classrooms with posters compared to grades of classes held in other classrooms. He also documents other information, like class topics and class size. What is the independent variable in this study?

Question

Quizplus · Accepted Answer

The independent variable is the variable that is being manipulated and tested in the study. In this case, it is whether or not motivational posters are placed in the classroom. Therefore, the independent variable is A) Motivational posters.

The Dean Believes That the Placement of Motivational Posters on the Walls