8.10 Consider the regression model Yi = b0 + b1X1i + b2X2i + b3(X1i * X2i) +
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8.10 Consider the regression model Yi = b0 + b1X1i + b2X2i + b3(X1i * X2i) +
ui. Use Key Concept 8.1 to show:
a. Y>X1 = b1 + b3X2 (effect of change in X1, holding X2 constant).
b. Y>X2 = b2 + b3X1 (effect of change in X2, holding X1 constant).
c. If X1 changes by X1 and X2 changes by X2, then Y =
(b1 + b3X2)X1 + (b2 + b3X1)X2 + b3X1X2.
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Related Book For
Introduction To Econometrics
ISBN: 9781292071367
3rd Global Edition
Authors: James Stock, Mark Watson
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