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Evaluation of April 1, 2000 School District Population Estimates Based on the Synthetic Ratio Method (Working Paper No. 74)

Figure 9. Mean Absolute Percent Errors (MAPE) for the April 1, 2000 Estimates of the School-Age Population in School Districts Compared with the Census 2000 Enumerated Population by Ten-Year Percent Change in the School District School-Age Population

Percent Change Mean Absolute Percent Error
Unweighted MAPE Weighted MAPE
Decrease of more than 10.0% 20.4 12.9
Decrease of 5.1% to 10.0% 7.8 8.4
Decrease of 5.0% or less 8.0 7.9
No Change or Increase of less than 5.0% 8.1 8.6
Increase of 5.0% to 9.9% 8.6 7.3
Increase of 10% or more 14.5 9.7

MAPE - Mean Absolute Percent Error

Return to Working Paper No. 74