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| Table C. Mean absolute percentage errors (MAPEs) of projections of number of public elementary and secondary school teachers, by lead time: 2011 |
|---|
| Statistic | Lead time (years) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
| Public elementary and secondary teachers | 1.0 | 1.4 | 1.7 | 2.3 | 2.9 | 3.4 | 4.1 | 4.4 | 5.1 | 5.9 |
| NOTE: MAPEs for teachers were calculated from the past 20 editions of Projections of Education Statistics containing teacher projections. 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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