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PerFit: Person Fit
Several person-fit statistics (PFSs; Meijer and Sijtsma, 2001, <doi:10.1177/01466210122031957>) are offered. These statistics allow assessing whether individual response patterns to tests or questionnaires are (im)plausible given the other respondents in the sample or given a specified item response theory model. Some PFSs apply to dichotomous data, such as the likelihood-based PFSs (lz, lz*) and the group-based PFSs (personal biserial correlation, caution index, (normed) number of Guttman errors, agreement/disagreement/dependability statistics, U3, ZU3, NCI, Ht). PFSs suitable to polytomous data include extensions of lz, U3, and (normed) number of Guttman errors.
Getting started
Browse package contents
Package details |
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| Author | Jorge N. Tendeiro |
| Maintainer | Jorge N. Tendeiro <tendeiro@hiroshima-u.ac.jp> |
| License | GPL (>= 2) |
| Version | 1.4.6 |
| Package repository | View on CRAN |
| Installation |
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