Question

classify the variable as nominal - level, ordinal - level, interval - level, or ratio - level measurement. gender
interval
ratio
ordinal
nominal

Explanation:

Nominal - level measurement is used for variables that are used to name, label, or categorize without any order or quantitative value. Gender (e.g., male, female, non - binary) is a categorical variable where the categories have no inherent order (unlike ordinal which has order, interval which has meaningful differences and no true zero, and ratio which has meaningful differences and a true zero). So gender is a nominal - level variable.

Answer:

D. Nominal