birtr

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

v1.0.0 · Oct 4, 2017 · GPL (>= 2)

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.

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3 NOTE

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Flavor	Status	Time
r-devel-linux-x86_64-debian-clang	OK	25.6s
r-devel-linux-x86_64-debian-gcc	OK	20.9s
r-devel-linux-x86_64-fedora-clang	OK	37.2s
r-devel-linux-x86_64-fedora-gcc	OK	35.7s
r-devel-macos-arm64	OK	10s
r-devel-windows-x86_64	OK	46s
r-oldrel-macos-arm64	NOTE
r-oldrel-macos-x86_64	NOTE	23s
r-oldrel-windows-x86_64	NOTE	53s
r-patched-linux-x86_64	OK	23.5s
r-release-linux-x86_64	OK	22.2s
r-release-macos-arm64	OK
r-release-macos-x86_64	OK	37s
r-release-windows-x86_64	OK	46s

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NOTE r-oldrel-macos-x86_64

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NOTE r-oldrel-windows-x86_64

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Check History

NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 10, 2026

NOTE r-oldrel-macos-arm64

LazyData

'LazyData' is specified without a 'data' directory

NOTE r-oldrel-macos-x86_64

LazyData

'LazyData' is specified without a 'data' directory

NOTE r-oldrel-windows-x86_64

LazyData

'LazyData' is specified without a 'data' directory

Version History

new 1.0.0 Mar 10, 2026