Question

A researcher is interested in the effect of exercise on stamina in elderly patients. The patients are randomly assigned to be in a high-exercise or low-exercise training program. At the end of the program, their stamina is measured by seeing how long they can walk comfortably on a treadmill. Identify the independent variable. Identify the dependent variable and explain how it was measure.

Answer 1

The independent variable is the exercise program (high vs low)

The dependent variable is what they are measuring so it would be the subjects stamina. The dependent variable is measured by how long they can walk comfortably on a treadmill (at the end of the program).