(d) 4 MLR 40. An interaction term in a multiple regression model may be used when: (a) the coefficient of determination is small. (b) there is a quadratic relationship between the response and explanatory variables. (c) neither one of two explanatory variables contribute significantly to the regression (d) the relationship between X1 and Y changes for differing values of X2.
(d) 4 MLR 40. An interaction term in a multiple regression model may be used when: (a) the coefficient of determination is small. (b) there is a quadratic relationship between the response and explanatory variables. (c) neither one of two explanatory variables contribute significantly to the regression (d) the relationship between X1 and Y changes for differing values of X2.
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