State University recently randomly sampled ten students and analyzed grade point average (GPA) and number of hours worked off-campus per week. The following data were observed: 
In this study the independent variable is the number of hours worked off campus per week.
Definitions:
Pituitary Gland
A small, pea-sized gland located at the base of the brain that produces hormones influencing growth, metabolism, and the functioning of other endocrine glands.
Endocrine System
A bodily system comprising of glands that release hormones directly into the bloodstream to regulate body functions and maintain homeostasis.
Hormones
Chemical messengers produced by glands in the body, which travel through the bloodstream to tissues or organs to regulate bodily functions.
Bloodstream
The flowing blood within the circulatory system of the body, responsible for transporting oxygen, nutrients, waste, and other substances.
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