GPA is best described as which type of variable?

• A. Numeric variable.
• B. Categorical variable.
• C. Operationalization.
• D. Population.

Answer: (A)

GPA is a numeric variable because it is a numerical score that represents average grades on a measurable scale. It takes quantitative values like 3.2 or 3.75, and these numbers allow arithmetic and statistical analysis (you can add, average, or run regressions). This distinguishes it from categorical variables, which group individuals into fixed categories without meaningful numeric distance between them. It isn’t an operationalization—that term refers to how a concept is defined and measured in a study, not the type of variable itself. And it isn’t a population, which refers to the entire group being studied, not a measurement.