A researcher wants to test the effects of a drug but suspects it might interact with gender. She gives men and women either a placebo or one of three doses of the drug (5 mg, 10 mg, or 20 mg). This experiment:

Question

Quizplus · Accepted Answer

The experiment involves two independent variables: gender (2 levels: men and women) and drug dose (4 levels: placebo, 5 mg, 10 mg, 20 mg). Multiplying the levels of each variable (2 genders * 4 doses) results in 8 unique conditions or cells.

A Researcher Wants to Test the Effects of a Drug