Dr. Smith is developing a new drug to treat headaches. To test this drug, she develops a study in which one group gets the new drug, and the other gets a placebo, or a fake pill. Dr. Smith measures whether headaches improve by giving each participant a survey each day. The drug is the ______ variable.

Question

Quizplus · Accepted Answer

The drug is the independent variable because it is the variable that is being manipulated by the researcher to observe its effect on the dependent variable, which in this case would be the improvement of headaches.

Dr Smith Is Developing a New Drug to Treat Headaches