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Projections of Education Statistics to 2021

NCES 2013-008
January 2013

Table B.  Mean absolute percentage errors (MAPEs) of projections of high school graduates, by lead time and control of school: 2012
Statistic Lead time (years)
1 2 3 4 5 6 7 8 9 10
Public high school graduates 1.0 1.0 1.5 1.6 1.5 2.0 2.7 3.7 4.3 4.3
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 21 editions of Projections of Education Statistics. MAPEs for private high school graduates were calculated from the past 10 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 February 2012.)

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