Use the following linear regression equation to answer the q

Use the following linear regression equation to answer the questions.

x₁ = 1.8 + 3.0x₂ – 7.5x₃ + 2.2x₄

Suppose x₃ and x₄ were held at fixed but arbitrary values and x₂ increased by 1 unit. What would be the corresponding change in x₁?


Suppose x₂ increased by 2 units. What would be the expected change in x₁?


Suppose x₂ decreased by 4 units. What would be the expected change in x₁?

Solution