Analysis of Covariance [electronic resource] : Is It the Appropriate Model to Study Change? / Paul T. Marston, Borich, Gary D.

The four main approaches to measuring treatment effects in schools; raw gain, residual gain, covariance, and true scores; were compared. A simulation study showed true score analysis produced a large number of Type-I errors. When corrected for this error, this method showed the least power of the fo...

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Bibliographic Details

Online Access:	Full Text (via ERIC)
Main Author:	Marston, Paul T., Borich, Gary D.
Corporate Author:	University of Texas at Austin. Research and Development Center for Teacher Education
Format:	Electronic eBook
Language:	English
Published:	[S.l.] : Distributed by ERIC Clearinghouse, 1977.
Subjects:	Achievement Gains. Analysis of Covariance. Comparative Analysis. Error of Measurement. Individual Differences. Mathematical Models. Measurement Techniques. Pretesting. Pretests Posttests. Raw Scores. Simulation. Statistical Analysis. Statistical Significance. Test Reliability. True Scores.