A multiple regression model has the estimated form = 7 + 3x₁ + 9x₂ As x₁ increases by 1 unit (holding x₂ constant), y is expected to A) increase by 9 units. B) decrease by 9 units. C) increase by 3 units. D) decrease by 3 units.

Question

Quizplus · Accepted Answer

According to the estimated model, the coefficient for x₁ is 3, which means that for every increase of 1 unit in x₁ (holding x₂ constant), y is expected to increase by 3 units. The coefficient for x₂ is 9, but since it is held constant in this scenario, it has no impact on the change in y.

A Multiple Regression Model Has the Estimated Form ​

A Multiple Regression Model Has the Estimated Form