When a person increases cycling speed, the rate of calories burned, distance traveled, and energy expended also increase. Which of the following is the independent variable?

Rationale

Speed is the independent variable.

In an experiment, the independent variable is the factor that is manipulated or controlled by the experimenter. In this case, the person controls the speed at which they are cycling.

A (Speed) CORRECT

Speed is the independent variable because it's the factor that the person can change or control. In this scenario, the speed of cycling is manipulated, which in turn affects the rate of calories burned, distance traveled, and energy expended.

B (Energy) YOUR ANSWER

Energy is not the independent variable because it is not being controlled or manipulated by the person. Instead, the energy expended is a result of the speed at which the person is cycling. Therefore, it is a dependent variable in this scenario.

C (Distance) YOUR ANSWER

Distance is also not the independent variable because it is not being controlled or manipulated by the person. The distance traveled is a consequence of how fast the person is cycling. Hence, it is a dependent variable in this context.

D (Calories) YOUR ANSWER

Calories are not the independent variable because the person does not control or manipulate the number of calories burned. The rate of calories burned is a result of the speed of cycling. Therefore, it is a dependent variable in this situation.

Conclusion

In this scenario, the person manipulates the speed at which they are cycling, making speed the independent variable. The rate of calories burned, distance traveled, and energy expended are all dependent on the speed and are therefore dependent variables. Understanding the relationship between independent and dependent variables is crucial in experimental design and data interpretation.

When a person increases cycling speed, the rate of calories burned, distance traveled, and energy expended also increase. Which of the following is the independent variable?

Speed is the independent variable.

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