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Standard Errors of Equipercentile Equating for the Common Item Nonequivalent Populations Design

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  • David Jarjoura
  • Michael J. Kolen

Abstract

An equating design in which two groups of examinees from slightly different populations are administered different test forms that have a subset of items in common is widely used. A procedure for equipercentile equating under this design has been previously outlined, but standard errors for this rather complex procedure have not been provided. This paper provides these standard errors and a simulation that verifies the equations for large samples. A real data example is provided for considering issues involved in using these procedures.

Suggested Citation

  • David Jarjoura & Michael J. Kolen, 1985. "Standard Errors of Equipercentile Equating for the Common Item Nonequivalent Populations Design," Journal of Educational and Behavioral Statistics, , vol. 10(2), pages 143-160, June.
    • Handle: RePEc:sae:jedbes:v:10:y:1985:i:2:p:143-160
    DOI: 10.3102/10769986010002143
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