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All Journal International Journal of Evaluation and Research in Education (IJERE)
Noraini Idris
Universiti Malaya
Education

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Using Partial Credit Model to Improve the Quality of an Instrument Saras Krishnan; Noraini Idris
International Journal of Evaluation and Research in Education (IJERE) Vol 7, No 4: December 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.828 KB) | DOI: 10.11591/ijere.v7i4.15146

Abstract

In using the Rasch model to improve the quality of an instrument, analysis purports to determine if the sample collaborates well with the items in the instrument such that the results are measuring a single underlying variable. The relevant properties of Rasch analysis are reliability and validity which are key indicators of the quality of a measurement instrument. This paper discusses the use of one type of Rasch model that is the Partial Credit Model to investigate reliability and validity of an instrument. By removing or changing items in the instrument when conditions of reliability and validity are not met, the quality of the instrument is improved.
Co-Authors Saras Krishnan