An Analytical Procedure for the Equipercentile Method of Equating Tests

An Analytical Procedure for the Equipercentile Method of Equating Tests

Prior use of the equipercentile method of test equating was based on a graphic procedure which is tedious, subject to smoothing errors, and non-analytical. Recognition of the equipercentile method as a curve-fitting procedure for two cumulative percentage distributions leads to a proposed analytical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Lindsay, Carl A, Prichard, Mark A
Format: Text Resource
Sprache:eng
Schlagworte:
Comparative Analysis
Computer Programs
Data Analysis
Equated Scores
Equipercentile Equating
FORTRAN Programing Language
Goodness of Fit
Statistical Analysis
Statistics
Test Interpretation
Test Results
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Beschreibung
Zusammenfassung:Prior use of the equipercentile method of test equating was based on a graphic procedure which is tedious, subject to smoothing errors, and non-analytical. Recognition of the equipercentile method as a curve-fitting procedure for two cumulative percentage distributions leads to a proposed analytical solution to the problem through use of linear estimates for successive "missing" score points. A complete equipercentile procedure which uses the proposed method and provides linear and quadratic functions for goodness-of-fit and extrapolation is discussed and illustrated with data from a test equating project. A FORTRAN IV program for the complete procedure is available. (Author)