Notes: C = personal consumption expenditure. I = gross private domestic investment. Y = gross domestic product. Source: Economic Report of the President, 2001, Table B-2, p. 276.
18.11. Using the data given in exercise 18.10, regress gross domestic investment I on GDP and save the results for further examination in a later chapter.
18.12. Consider the macroeconomics identity
Ct = Pq + ft Yt + ut and, following the accelerator model of macroeconomics, let It = ao + a1(Yt - Yt_ 1) + Vt where u and v are error terms. From the data given in exercise 18.10, estimate the accelerator model and save the results for further study.
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