Which of the following can best be described as a categorical variable?

Religion is a categorical variable because it sorts cases into distinct groups with no numerical order.

Categorical variables classify by kind rather than by measured quantity.

Age is a quantitative variable measured on a continuous numerical scale.

Annual income is quantitative, expressed in measurable monetary amounts.

Grade point average is quantitative, being a computed numerical score.

Categorical variables are further split into nominal and ordinal types.