birtr: The R Package for "The Basics of Item Response Theory Using R"

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.

Version: 1.0.0
Depends: R (≥ 3.4.1)
Suggests: testthat
Published: 2017-10-04
DOI: 10.32614/CRAN.package.birtr
Author: Seock-Ho Kim [aut, cre]
Maintainer: Seock-Ho Kim <shkim at>
License: GPL-2 | GPL-3 [expanded from: GPL (≥ 2)]
NeedsCompilation: no
In views: Psychometrics
CRAN checks: birtr results


Reference manual: birtr.pdf


Package source: birtr_1.0.0.tar.gz
Windows binaries: r-devel:, r-release:, r-oldrel:
macOS binaries: r-release (arm64): birtr_1.0.0.tgz, r-oldrel (arm64): birtr_1.0.0.tgz, r-release (x86_64): birtr_1.0.0.tgz, r-oldrel (x86_64): birtr_1.0.0.tgz


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