The Consumer Price Index (CPI) and the cost of subway fare from Table 10-1 in the Chapter Problem are listed below.

Find the (a) explained variation, (b) unexplained variation, (c) total variation, (d) coefficient of determination, and (e) standard error of estimate s_e. In each case, there is sufficient evidence to support a claim of a linear correlation so that it is reasonable to use the regression equation when making predictions.

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CPI Subway Fare 30.2 0.15 48.3 0.35 112.3 1.00 162.2 1.35 191.9 1.50 197.8 2.00 Table 10-1 Cost of a Slice of Pizza, Subway Fare, and the CPI Year 1960 1973 1995 2002 Cost of Pizza 0.15 1.25 1.75 Subway Fare 0.15 1.35 1.50 CPI 30.2 0.35 0.35 48.3 1986 1.00 1.00 112.3 162.2 191.9 2003 2.00 2.00 197.8