Problem

(a) Plot the voter participation rate. (b) Describe the trend (if any) and discuss possibl...

(a) Plot the voter participation rate. (b) Describe the trend (if any) and discuss possible causes. (c) Fit both a linear and a quadratic trend to the data. (d) Which model is preferred? Why? (e) Make a forecast for 2008, using a trend model of your choice (or a judgment forecast). (f) Check the Web for the actual 2008 voter participation rate. How close was your forecast? Note: Time is in 4-year increments, so use t = 15 for the 2008 forecast. Voters

U.S. Presidential Election Voter Participation, 1952-2004
Year	Voting Age Population	Voted for President	% Voting Pres
1952	99,929	61,551	61.6
1956	104,515	62,027	59.3
1960	109,672	68,838	62.8
1964	114,090	70,645	61.9
1968	120,285	73,212	60.9
1972	140,777	77,719	55.2
1976	152,308	81,556	53 5
1980	163,945	86,515	52.8
1984	173,995	92,653	53 3
1988	181,956	91,595	50.3
1992	189,524	104,425	55.1
1996	196,928	96,278	49 0
2000	207,884	105,397	50.7
2004	220,377	122,349	55.5

Source: Statistical Abstract of the United States. 2007. www.census.gov. Voters are in thousands.

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