Madison does a study to learn if drinking warm milk before one goes to bed shortens the time it takes one to get to sleep.In her study,the independent variable is
A) the bed.
B) the time it takes to get to sleep.
C) the warm milk.
D) Madison.

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated in the study to see if it has an effect on the dependent variable, which is the variable being measured. In this case, the independent variable is the warm milk, as Madison is studying whether it affects the time it takes someone to get to sleep. The bed, time it takes to get to sleep, and Madison herself are not being manipulated in the study, so they are not the independent variable.

Madison Does a Study to Learn If Drinking Warm Milk