Consider the following models. a. Will OLS estimates of α 1 and β 1 be the same?

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Consider the following models.

Model A: Y, 3 aj t azX + asXзr + uln Model B: (Y, — Ху) — Ві + В2Х, + BзХу, + иz


a. Will OLS estimates of α1 and β1 be the same? Why?
b. Will OLS estimates of α3 and β3 be the same? Why?
c. What is the relationship between α2 and β2?
d. Can you compare the R2 terms of the two models? Why or why not?

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Basic Econometrics

ISBN: 978-0073375779

5th edition

Authors: Damodar N. Gujrati, Dawn C. Porter

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