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A Program for Nonparametric Equivalent-Group Equating

Author(s):
Haberman, Shelby J.
Publication Year:
2017
Report Number:
RM-17-01
Source:
ETS Research Memorandum
Document Type:
Report
Page Count:
15
Subject/Key Words:
Nonparametric Item Response Models, Equating, FORTRAN, Equipercentile Linking, Percentile Rank, Linear Interpolation, Cumulative Distribution Function

Abstract

A Fortran 2003 program implements a nonparametric equipercentile equating procedure for equivalent groups. The procedure is essentially a conventional equipercentile equating procedure without log-linear smoothing; however, it can be applied in cases in which scores may have continuous values and may have unlimited range.

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