An interaction term in a multiple regression model may be used when
A)the coefficient of determination is small.
B)there is a curvilinear relationship between the dependent and independent variables.
C)neither one of 2 independent variables contribute significantly to the regression model.
D)the relationship between X1 and Y changes for differing values of X2.

Question

Quizplus · Accepted Answer

An interaction term in a multiple regression model is used to capture the effect on the dependent variable (Y) when the relationship between one independent variable (X1) and Y changes at different levels/values of another independent variable (X2). This allows for the modeling of more complex relationships where the influence of one predictor on the outcome variable depends on the value of another predictor.

An Interaction Term in a Multiple Regression Model May Be