Question

20 multiple choice 1 point you are given a data set containing the following variable names: id, age, sex, income, disability and race. which variables are factors? id, sex, income, disability, race id, sex, age, race sex, disability, race id, age, income

Explanation:

A factor variable is a categorical variable. ID is a nominal identifier (not a meaningful category in the statistical sense of factors), age is a numerical variable, income is a numerical variable. Sex (e.g., male/female), disability (e.g., yes/no), and race (e.g., different racial groups) are categorical variables.

Answer:

Sex, disability, race.