Regents High School Examination Mathematics Worksheet - University Of The State Of New York Page 14

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28 The accompanying table shows the percent of the adult population
that married before age 25 in several different years. Using the year
as the independent variable, find the linear regression equation.
Round the regression coefficients to the nearest hundredth.
Using the equation found above, estimate the percent of the adult
population in the year 2009 that will marry before age 25, and round
to the nearest tenth of a percent.
Year ( x )
Percent ( y )
1971
42.4
1976
37.4
1980
37.1
1984
34.1
1989
32.1
1993
28.8
1997
25.7
2000
25.5
[14]
Math. B – Aug. ’07

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