PS-0.2: 3 Kinds of Variables

Match it! Select the correct answer from the pull down...Good luck!

The variable that changes in response to the manipulated variable is the

If the independent variable is the cause, the dependent variable is the

Name a controlled variable: Lee tested the effects of exercise on heart rate in ballet dancers.

Name a controlled variable: Ben investigates the effect of hours of sleep on test scores in 9th graders

Name the independent variable: Sue tests the effect of concentration of carbon dioxide on acidity of pond water.

Name the independent variable: Jen investigates the effect of age on hearing acuity.

The variable that the experimenter deliberately changes is the

Name the dependent variable: Joe tested the effect of concentration of oxygen in the air on breathing rates in athletes.