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equateIRT Package in R
Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Statistics.ORCID iD: 0000-0001-5549-8262
2018 (English)In: Measurement, ISSN 1536-6367, E-ISSN 1536-6359, Vol. 16, no 3, p. 195-202Article in journal (Refereed) Published
Abstract [en]

Equating test scores between different achievement test versions is important to assure comparability between test takers’ scores. As many items are modelled with item response theory (IRT), it makes sense to also equate the test scores with IRT equating methods. The equateIRT package in R provides a set of functions which implements IRT equating methods including newer extensions. This paper summarizes some of the advances in equating with IRT, reviews the equateIRT package, and demonstrates, through two illustrative examples, some of the key features of the package.

Place, publisher, year, edition, pages
Routledge, 2018. Vol. 16, no 3, p. 195-202
Keywords [en]
IRT observed-score equating, IRT true-score equating, equating coefficients, bisector method, IRT
National Category
Probability Theory and Statistics
Research subject
Statistics
Identifiers
URN: urn:nbn:se:umu:diva-151901DOI: 10.1080/15366367.2018.1492866ISI: 000444115500005OAI: oai:DiVA.org:umu-151901DiVA, id: diva2:1248550
Funder
Swedish Research Council, 2014-578Available from: 2018-09-17 Created: 2018-09-17 Last updated: 2018-10-05Bibliographically approved

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fulltext(998 kB)60 downloads
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Wiberg, Marie

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf