You conduct an experiment on twenty 18-year-old male subjects to see how various intensities of exercise influence heart rate.Which of the following is/are considered a dependent variable?
A) age of subjects
B) sex of subjects
C) intensity of exercise
D) heart rate
E) More than one of the answers is correct.

Question

Quizplus · Accepted Answer

The dependent variable is what is being measured or observed in the experiment. In this case, it is the heart rate of the subjects, which is being affected by the various intensities of exercise. The age and sex of the subjects are independent variables, since they have been predetermined and are not being changed or tested in the experiment. The intensity of exercise is also an independent variable, since it is being manipulated by the researcher to see its effect on heart rate.

You Conduct an Experiment on Twenty 18-Year-Old Male Subjects to See