The U.S. economy was in recession during parts of 1990 and 1991, most of 2001, and from

Question:

The U.S. economy was in recession during parts of 1990 and 1991, most of 2001, and from December 2007 through June 2009. Compute the residuals for the least-squares line found in Exercise 10. During times of recession, does the least-squares line predict the following year's unemployment well? Does it tend to overpredict or underpmdict?