Question

a researcher is investigating the effects of exercise on weight. what are the independent and dependent variables in this experiment?
the dependent variable is weight; the independent variable is exercise.
the dependent variable is amount of exercise; the independent variable is calories consumed.
the independent variable is calories consumed; the dependent variable is diet.
the independent variable is weight; the dependent variable is calories consumed.

Explanation:

In an experiment, the independent variable is what the researcher manipulates, and the dependent variable is what is being measured and is affected by the independent variable. Here, the researcher manipulates exercise to see its effect on weight. So exercise is the independent variable and weight is the dependent variable.

Answer:

The dependent variable is weight; the independent variable is exercise.