In the first-order model = 60 + 40x₁ -10x₂ + 5x₁x₂, a unit increase in x₁, while holding x₂ constant at 1, increases the value of $y$ on average by 45 units.

Question

Quizplus · Accepted Answer

According to the given information, a unit increase in x₁ while holding x₂ constant at 1 increases the value of y on average by 45 units. This confirms that the coefficient of x₁ is 40 in the model, and hence the statement is true.

In the First-Order Model = 60 + 40x1 -10x2 yyy

In the First-Order Model = 60 + 40x₁ -10x₂ $y$