In order to use a nominal variable that has four attributes as an independent variable in multiple regression, you should
A) convert it into a series of dummy variables
B) create a multicollinearity trap
C) run a scatterplot to be sure it has a linear effect
D) transform it into a standardized variable

Question

Quizplus · Accepted Answer

Nominal variables cannot be used directly in multiple regression, therefore they need to be converted into a series of dummy variables by assigning a "1" to the appropriate category and "0" to the others. This allows for the variable to be used as a categorical independent variable in the regression model.

In Order to Use a Nominal Variable That Has Four