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 for 8 weeks.At the end of the program,their stamina is measured by seeing how long they can walk comfortably on a treadmill.In this study,the dependent variable is

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The dependent variable in this study is the measure of stamina, which is determined by the number of minutes the patients can walk comfortably on the treadmill. This is the variable that is being affected by the independent variable (high- versus low-exercise program) and is therefore the dependent variable.

A Researcher Is Interested in the Effect of Exercise on Stamina