The following statement appeared in the article “Dimensions of Adjustment Among College Women” (Journal of College Student Development [1998]: 364): Regression analyses indicated that academic adjustment and race made independent contributions to academic achievement, as measured by current GPA. Suppose
y = current GPA
x1 = academic adjustment score
x2 = race (with white = 0, other = 1)
What multiple regression model is suggested by the statement? Did you include an interaction term in the model? Why or why not?