Example 6 Voting The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points,

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example 6 Voting The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points, representing the years from 1950 as x and the percent as y. Find the quadratic model that is the best fit for the data. Find the power model that is the best fit for the data. Discuss the use of the two models to predict the percent voting after 2004. Which type of function would give the better fit if a point were added giving the percent voting as 58.1 in 2008? Year Percent 1960 63.1 1984 53.1 1964 61.9 1988 50.1 1968 60.8 1992 55.1 1972 55.2 1996 49.1 1976 53.6 2000 51.3 1980 52.6 2004 55.3 Chapter 3.4 2009 PBLPathways

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points, representing the years from 1950 as x and the percent as y. Find the quadratic model that is the best fit for the data. Find the power model that is the best fit for the data. Discuss the use of the two models to predict the percent voting after 2004. Which type of function would give the better fit if a point were added giving the percent voting as 58.1 in 2008? Year Percent 1960 63.1 1984 53.1 1964 61.9 1988 50.1 1968 60.8 1992 55.1 1972 55.2 1996 49.1 1976 53.6 2000 51.3 1980 52.6 2004 55.3

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points, representing the years from 1950 as x and the percent as y. Year Percent 1960 63.1 1984 53.1 1964 61.9 1988 50.1 1968 60.8 1992 55.1 1972 55.2 1996 49.1 1976 53.6 2000 51.3 1980 52.6 2004 55.3

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points, representing the years from 1950 as x and the percent as y. x y 10 63.1 34 53.1 14 61.9 38 50.1 18 60.8 42 55.1 22 55.2 46 49.1 26 53.6 50 51.3 30 52.6 54 55.3

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Graph the data points, representing the years from 1950 as x and the percent as y. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Find the quadratic model that is the best fit for the data. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Find the quadratic model that is the best fit for the data. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Find the power model that is the best fit for the data. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Find the power model that is the best fit for the data. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Discuss the use of the two models to predict the percent voting after 2004. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Discuss the use of the two models to predict the percent voting after 2004. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Discuss the use of the two models to predict the percent voting after 2004. y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Which type of function would give the better fit if a point were added giving the percent voting as 58.1 in 2008? y x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Which type of function would give the better fit if a point were added giving the percent voting as 58.1 in 2008? y (58, 58.1) x

The table shows the percent of voting-age population who voted in presidential elections for the years 1960–2004. Which type of function would give the better fit if a point were added giving the percent voting as 58.1 in 2008? y x