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Projections of Education Statistics to 2020

NCES 2011-026
September 2011

Table B.  Mean absolute percentage errors (MAPEs) of projections of high school graduates, by lead time and control of school: 2011

Statistic Lead time (years)
1 2 3 4 5 6 7 8 9 10
Public high school graduates 1.0 1.0 1.5 1.7 1.6 2.1 2.8 3.7 4.2 4.0
Private high school graduates 0.9 0.9 1.6 2.8 5.0 6.2 4.9 4.8 1.6 1.6
NOTE: MAPEs for public high school graduates were calculated from the past 20 editions of Projections of Education Statistics. MAPEs for private high school graduates were calculated from the past nine editions. Calculations were made using unrounded numbers. Some data have been revised from previously published figures.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Projections of Education Statistics, various issues. (This table was prepared March 2011.)

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