English, Article edition: OPTIFACT: Stata module to find the best summated rating scale from a list of items Paul Millar

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Bookmark: http://trove.nla.gov.au/version/103632
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  • code
Language
  • English

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Title
  • OPTIFACT: Stata module to find the best summated rating scale from a list of items
Author
  • Paul Millar
Physical Description
  • code
Notes
  • optifact is a program to find the combination of items that makes the best summated rating scale. Each possible combination of items is called a candidate scale. optifact uses common factor analysis on every candidate scale, does canonical correlation (if requested) on each of the candidate scales, and sorts the candidate scales which have only one dimension in descending order of Cronbach's alpha, for each size of scale. The alphas are not compared across scale sizes, since alpha usually increases with the addition of an item, even if that item does not significantly add to the measurement.
  • rating, scale, common factor, Cronbach alpha
  • RePEc:boc:bocode:s449503
Language
  • English
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