A Criterion to Evaluate the Individual Raw-to-Scale Equating Conversions

Author(s):
Guo, Hongwen; Puhan, Gautam; Walker, Michael
Publication Year:
2013
Report Number:
RR-13-05
Source:
ETS Research Report
Document Type:
Report
Page Count:
16
Subject/Key Words:
Conditional Standard Error of Measurement (CSEM) Equating Reporting Scale Scaling

Abstract

In this study we investigated when an equating conversion line is problematic in terms of gaps and clumps. We suggest using the conditional standard error of measurement (CSEM) to measure the scale scores that are inappropriate in the overall raw-to-scale transformation.

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