Biology, 07.10.2020 22:01 tomtom6870

A student wants to determine if exercise helps one to learn better. She conducts an experiment where 10 people start an exercise program and 10 people do not exercise. During the first semester grades are recorded. Then, after the first semester, the people's roles are reversed. The exercisers stop their program and the non-exercisers start the exercise program. Grades are recorded for the second semester. Before and after grades are compared. F. What is the dependent variable? G. What is the independent variable? H. What variables need to be controlled (held constant) for this experiment to be fair? I. Does she have a control group? If yes, what is it? If no, what should it be?

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A student wants to determine if exercise helps one to learn better. She conducts an experiment where...