Application of a Linear Equating Method to Incomplete Data

Tadashi Shibayama, Sukeyori Shiba

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper presents a linear equating procedure which is applicable to the incomplete data of an essay-type test scored by several raters. The procedure is based on a two-step optimizing criterion. In the first step, weight parameters are estimated in order to mutually equate dispersions of raters. In the second step, additive constants for equating means are obtained on condition that weight parameters are fixed. A numerical example is given to illustrate the efficacy of the procedure.

Original languageEnglish
Pages (from-to)86-89
Number of pages4
JournalThe Japanese Journal of Educational Psychology
Issue number1
Publication statusPublished - 1987
Externally publishedYes


  • essay-type test
  • incomplete data
  • linear equating procedure

ASJC Scopus subject areas

  • Education
  • Developmental and Educational Psychology


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