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PerFit  

Person Fit
View on CRAN: Click here


Download and install PerFit package within the R console
Install from CRAN:
install.packages("PerFit")

Install from Github:
library("remotes")
install_github("cran/PerFit")

Install by package version:
library("remotes")
install_version("PerFit", "1.4.7")



Attach the package and use:
library("PerFit")
Maintained by
Jorge N. Tendeiro
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2014-10-07
Latest Update: 2025-04-02
Description:
Several person-fit statistics (PFSs; Meijer and Sijtsma, 2001, ) 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.
How to cite:
Jorge N. Tendeiro (2014). PerFit: Person Fit. R package version 1.4.7, https://cran.r-project.org/web/packages/PerFit. Accessed 08 Aug. 2026.
Previous versions and publish date:
(2026-07-09 08:17), 1.2 (2014-10-07 11:07), 1.3.1 (2015-03-18 09:52), 1.3 (2015-03-13 10:21), 1.4.1 (2016-10-18 15:04), 1.4.2 (2018-06-01 16:05), 1.4.3 (2018-10-03 18:10), 1.4.4 (2021-01-17 01:00), 1.4.5 (2021-02-22 01:10), 1.4.6 (2021-10-15 09:40), 1.4 (2015-07-20 09:59)
Other packages that cited PerFit R package
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Complete documentation for PerFit
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