Fit a linear trend equation to the time series using this


From 1997 through 2004, the value of U.S. exports to Mexico was as shown below. Data are in billions of dollars.

1445_Data 2.jpg

a. Fit a linear trend equation to the time series. Using this equation, determine the trend estimate for 2012.

b. Fit a quadratic equation to the time series, then use the equation to determine the trend estimate for 2012.

c. Construct a graph of the time series along with the equations fitted in parts (a) and (b). Which equation appears to better fit the data?

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