To determine whether noise affects the ability to solve math problems, a researcher has one group solve math problems in a quiet room and another group solve math problems in a noisy room. The group solving problems in the noisy room completes 15 problems in one hour and the group solving problems in the quiet room completes 22 problems in one hour. In this experiment, the independent variable is ____________ and the dependent variable is _____________.
A) The number of problems solved; the difficulty of the problems
B) The number of problems solved; the noise level in the room
C) The noise level in the room; the number of problems solved
D) The noise level in the room; the difficulty of the problems

Question

Quizplus · Accepted Answer

The independent variable is the noise level in the room, as it is what the researcher manipulates. The dependent variable is the number of problems solved, as it is what is measured to see the effect of the noise level.

To Determine Whether Noise Affects the Ability to Solve Math