A dummy variable in a multiple regression analysis is
A) an unmeasured variable that is excluded from the underlying causal model.
B) an uncontrolled variable that creates a spurious relationship.
C) an uncontrolled variable that intervenes or "mediates" a relationship.
D) a variable with values of 0 and 1 used to represent a nominal- or ordinal-scale variable.

Question

Quizplus · Accepted Answer

A dummy variable is used in regression analysis to represent categorical data with two or more categories by assigning binary values (0 or 1) to indicate the presence or absence of a specific category.

A Dummy Variable in a Multiple Regression Analysis Is