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The Relationship of the General Educational Performance Index Measure to Other Indicators of Educational Development in Each of Three Samples from a United States Army Population.
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Modjeski, Richard B.; Michael, William B. – Educational and Psychological Measurement, 1978
The General Education Performance Index (GEPI) is a comparatively short test covering the same content as the General Educational Development Test (GED), which takes ten hours to administer. Correlations of the subtests of the GEPI with the GED ranged from .28 to .57. (JKS)
Descriptors: Correlation, Equivalency Tests, Military Personnel, Statistical Data