Multiple choice Interpret parameter If y 2 3x 1 5x 2 8x 3 , then controlling for x 2 and x 3 , the change in the estimated mean of y when x 1 is increased from 10 to 20 a Equals 30 b Equals 0 3 c Cannot be givendepends on specific values of x 2 and x 3 d Must be the same as when we ignore x 2 and x 3

Question: Multiple choice: Interpret parameter If y = 2 + 3x 1 + 5x 2 - 8x 3 , then controlling for x 2 and x

Multiple choice: Interpret parameter If ŷ = 2 + 3x₁ + 5x₂ - 8x₃, then controlling for x₂ and x₃, the change in the estimated mean of y when x₁ is increased from 10 to 20
a. Equals 30.
b. Equals 0.3.
c. Cannot be given—depends on specific values of x₂and x₃.
d. Must be the same as when we ignore x₂ and x₃.

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