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birtr  

The R Package for "The Basics of Item Response Theory Using R"
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("birtr", "1.0.0")



Attach the package and use:
library("birtr")
Maintained by
Seock-Ho Kim
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2017-10-04
Latest Update: 2017-10-04
Description:
R functions for "The Basics of Item Response Theory Using R" by Frank B. Baker and Seock-Ho Kim (Springer, 2017, ISBN-13: 978-3-319-54204-1) including iccplot(), icccal(), icc(), iccfit(), groupinv(), tcc(), ability(), tif(), and rasch(). For example, iccplot() plots an item characteristic curve under the two-parameter logistic model.
How to cite:
Seock-Ho Kim (2017). birtr: The R Package for "The Basics of Item Response Theory Using R". R package version 1.0.0, https://cran.r-project.org/web/packages/birtr. Accessed 05 Aug. 2026.
Previous versions and publish date:
No previous versions
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View birtr citation profile
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Complete documentation for birtr
Functions, R codes and Examples using the birtr R package
Some associated functions: ability . birtr . groupinv . icc . icccal . iccfit . iccplot . rasch . tcc . tif . 
Some associated R codes: ability.R . birtr.R . groupinv.R . icc.R . icccal.R . iccfit.R . iccplot.R . rasch.R . tcc.R . tif.R .  Full birtr package functions and examples
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