A variable used in regression analysis that represents the presence or absence of a condition,e.g. ,seasonality,is called a (n):
A)Random variable.
B)Dummy variable.
C)Extraneous variable.
D)Correlating variable.
E)Redundant variable.

Question

Quizplus · Accepted Answer

A dummy variable is used to represent the presence or absence of a condition in regression analysis. It takes on the value 1 if the condition is present and 0 if it is absent. This allows the regression model to account for the effect of the condition on the outcome variable.

A Variable Used in Regression Analysis That Represents the Presence