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Preliminary Psychometric Analysis of Survey Items

Description:

Dr. Cengiz Zopluoglu will briefly discuss some major concepts for analyzing a set of survey items including
  • assessment of unidimensionality using eigenvalues and confirmatory factor analysis,
  • assessment of response category characteristics (difficulty, discrimination) using a free software jMetrik (http://www.itemanalysis.com/),
  • and computing and interpreting reliability coefficient.
The session will provide participants the opportunity to analyze a sample survey dataset including items from PISA 2012 assessment to measure attitude towards mathematics.

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