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Brian researched how a person's intelligence quotient (IQ) is affected by exercise. First, people in his study took an I

Posted: Mon Jul 11, 2022 11:42 am
by answerhappygod
Brian researched how a person's intelligence quotient (IQ) isaffected by exercise. First, people in his study took an IQ test.Then, over 2 months, they did different amounts of exercise. Then,Brian gave them a second IQ test.
What is the response variable in this experiment?
Select the correct answer below:
1- The number of people in the study
2-The first IQ test score
3- The amount of exercise the people do
4-The change in IQ score from the first to second test