In linear regression,a dummy variable is used to
A)represent residual variables.
B)represent missing data in each sample.
C)include hypothetical data in the regression equation.
D)include categorical variables in the regression equation.

Question

Quizplus · Accepted Answer

Dummy variables are used in linear regression to include categorical variables in the regression equation by converting them into a form that can be provided to the model, typically as 0s and 1s to represent the different categories.

In Linear Regression,a Dummy Variable Is Used to