a. Graph this time series. Does a linear trend appear?
b. Develop the equation for the linear trend component for the time series. What is the average decrease in the percentage voting per presidential election?
c. Use the trend equation to forecast the percentage voting in2004.
The Federal Election Commission maintains data showing the voting age population, the number of registered voters, and the turnout for federal elections. The following table shows the national voter turnout in presidential elections as a percentage of the voting age population from 1964 to 2000 (http://www.fec.gov).
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