Question

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda, and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured.

Independent variable: Whether the participant drinks caffeinated soda or caffeine-free soda.

Dependent Variable: The pulse rate of the individuals in the two groups at rest.

Answer 1

The subject of this question is Biology. The experiment focuses on studying the effects of drinking caffeinated soda on pulse rate. The independent variable is whether the participant drinks caffeinated soda or caffeine-free soda, and the dependent variable is the pulse rate.

Step-by-step explanation:

The subject of this question is Biology. The experiment described is focused on studying the effects of drinking caffeinated soda on pulse rate. The independent variable in the experiment is whether the participant drinks caffeinated soda or caffeine-free soda. The dependent variable is the pulse rate of the individuals in the two groups at rest. The experiment aims to determine if drinking caffeinated soda increases pulse rate.