In the first-order model ŷ = 8 + 3x₁ +5x₂, a unit increase in $x _ { 2 }$ , while holding $x _ { 1 }$ constant, increases the value of $y$ on average by 3 units.

Question

Quizplus · Accepted Answer

The statement is directly given in the model that a unit increase in $x_2$ increases the value of $y$ on average by 3 units, while holding $x_1$ constant. Therefore, the statement is true.

In the First-Order Model ŷ = 8 + 3x1 +5x2 x2x _ { 2 }x2​

In the First-Order Model ŷ = 8 + 3x₁ +5x₂ $x _ { 2 }$