A multiple regression model has the following estimated form: = 7 + 2x₁ + 9x₂ As x₂ increases by 1 unit (holding x₁ constant), y is expected to A) increase by 9 units. B) decrease by 9 units. C) increase by 2 units. D) decrease by 2 units.

Question

Quizplus · Accepted Answer

According to the estimated regression form, when x₂ increases by 1 unit (holding x₁ constant), the coefficient for x₂ is 9. Therefore, y is expected to increase by 9 units.

A Multiple Regression Model Has the Following Estimated Form