Use the following multiple regression 3quation Yi=90-5X1i+3X2i a. Interpret the

Question

Use the following multiple regression 3quation

Yi=90-5X1i+3X2i

a. Interpret the meaning of the slopes

b. Interpret the meaning of the Y intercept

For each one unit increase in X1, Y will _______(increase/decrease) an estimated _____(# of units), holding _______ (x1,x2,y) constant.

For each one unit increase in X2, Y will _______(increase/decrease) an estimated _____(# of units), holding ________(x1,x2,y) constant.

B. Interpret the meaning of the Y intercept. Chose the correct answer.

a. The y intercept 90 estimates the value of Y when X1 is 0

b.The y intercept 90 estimates the value of Y when X2 is 0

c. The y intercept 90 estimates the value of Y when both X1 and X2 are 0.

Explanation / Answer

a)

If, one unit of change in x1, y changes 2 units when x2 is fixed.

b)

Answer: c

That is, The y intercept 90 estimates the value of Y when both X1 and X2 are 0.

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