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Projections of Education Statistics to 2011
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Table A1.11-Number of years, projection methods, and smoothing constants used to project public school enrollments and high school graduates, by state
Projected state variable Number of years
Projection method Smoothing constant Choice of smoothing constant
Grade progression rates 30 Single exponential smoothing 0.4 Empirical research
Graduates/grade 12 enrollment 30 Single exponential smoothing 0.4 Empirical research
SOURCE: U.S. Department of Education, National Center for Education Statistics, State Public Elementary and Secondary Enrollment Model, and State Public High School Graduates Model. (This table was prepared June 2001.)

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