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 is used when the relationship between two independent variables and the dependent variable changes for different values of one of the independent variables. This is described in option D, where X₁ and Y have a changing relationship based on varying X₂ values. The other options do not relate to the use of an interaction term.

An Interaction Term in a Multiple Regression Model May Be