Refer to Section 8.8 and the data in the following table concerning disposable personal income and personal
Question:
According to the National Bureau of Economic Research, the most recent U.S. business contraction cycle ended in late 2001. Split the data into three sections:
(1) 19701981, (2) 19822001, and (3) 20022005.
a. Estimate both the model for the full dataset (years 19702005) and the third section (post-2002). Using the Chow test, determine if there is a significant break between the third period and the full dataset.
b. With this new data in Table 8.11, determine if there is still a significant difference between the first set of years (19701981) and the full dataset, now that there are more observations available.
c. Perform the Chow test on the middle period (19822001) versus the full dataset to see if the data in this period behave significantly differently than the rest of the data.
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