Package: irtoys 0.2.2

irtoys: A Collection of Functions Related to Item Response Theory (IRT)

A collection of functions useful in learning and practicing IRT, which can be combined into larger programs. Provides basic CTT analysis, a simple common interface to the estimation of item parameters in IRT models for binary responses with three different programs (ICL, BILOG-MG, and ltm), ability estimation (MLE, BME, EAP, WLE, plausible values), item and person fit statistics, scaling methods (MM, MS, Stocking-Lord, and the complete Hebaera method), and a rich array of parametric and non-parametric (kernel) plots. Estimates and plots Haberman's interaction model when all items are dichotomously scored.

Authors:Ivailo Partchev [aut, cre], Gunter Maris [aut], Tamaki Hattori [ctb]

irtoys_0.2.2.tar.gz
irtoys_0.2.2.zip(r-4.7-x86_64)irtoys_0.2.2.zip(r-4.7-arm64)irtoys_0.2.2.zip(r-4.6-x86_64)irtoys_0.2.2.zip(r-4.6-arm64)irtoys_0.2.2.zip(r-4.5-x86_64)
irtoys_0.2.2.tgz(r-4.6-x86_64)irtoys_0.2.2.tgz(r-4.6-arm64)irtoys_0.2.2.tgz(r-4.5-x86_64)irtoys_0.2.2.tgz(r-4.5-arm64)
irtoys_0.2.2.tar.gz(r-4.7-arm64)irtoys_0.2.2.tar.gz(r-4.7-x86_64)irtoys_0.2.2.tar.gz(r-4.6-arm64)irtoys_0.2.2.tar.gz(r-4.6-x86_64)
irtoys_0.2.2.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
irtoys/json (API)

# Install 'irtoys' in R:

install.packages('irtoys', repos = c('https://irtools.r-universe.dev', 'https://cloud.r-project.org'))

Datasets:

b1 - Example item parameters 1PL
b2 - Example item parameters 2PL
b3 - Example item parameters 3PL
Scored - Binary (true/false) responses to a test
Scored2pl - Example item parameters
Unscored - Original, unscored multiple-choice responses to a test

On CRAN:

This package does not link to any Github/Gitlab/R-forge repository. No issue tracker or development information is available.

5.56 score 3 stars 6 packages 67 scripts 784 downloads 17 mentions 32 exports 22 dependencies

Last updated from:a0364e6d44. Checks:15 OK. Indexed: yes.

Target	Result	Time
linux-devel-arm64	OK	110
linux-devel-x86_64	OK	136
source / vignettes	OK	179
linux-release-arm64	OK	99
linux-release-x86_64	OK	212
macos-release-arm64	OK	172
macos-release-x86_64	OK	324
macos-oldrel-arm64	OK	199
macos-oldrel-x86_64	OK	277
windows-devel-arm64	OK	379
windows-devel-x86_64	OK	148
windows-release-arm64	OK	363
windows-release-x86_64	OK	115
windows-oldrel-x86_64	OK	112
wasm-release	OK	103

Exports:ability api dpv eap erf est iif interactionModel irf irfPlot itf mlebme normal.qu npp qrs read.ip.bilog read.ip.icl read.qu.icl read.resp rim sca sco scoreMetric scp sim tet tgf tia tif trf tsc wle

Dependencies:admisc cli expm generics glue lattice lifecycle ltm magrittr MASS Matrix msm mvtnorm pillar pkgconfig polycor rlang sm survival tibble utf8 vctrs

Round about irtoys

Rendered fromirtoys-vignette.Rmdusingknitr::rmarkdown

Last update: 2022-05-12
Started: 2016-10-10

Help page	Topics
Estimate and plot IRT models for binary responses	irtoys-package irtoys
Estimate ability	ability
The api appropriateness index	api
Example item parameters 1PL (Bilog)	b1
Example item parameters 2PL (Bilog)	b2
Example item parameters 3PL (Bilog)	b3
Draw plausible values	dpv
EAP estimation of ability	eap
Plot empirical response function	erf
Estimate item parameters	est
Item information function	iif
Interaction model	interactionModel
Item response function	irf
Item fit plot	irfPlot
Test item fit	itf
Maximum likelihood and Bayes Modal estimation of ability	mlebme
Normal quadrature points and weights	normal.qu
Non-parametric characteristic curves	npp
A plot method for item information functions	plot.iif
A plot method for the interaction model	plot.imp
A plot method for item response functions	plot.irf
A plot method for test information functions	plot.tif
A plot method for test response functions	plot.trf
Quantiles of the ranked sum scores	qrs
Read in parameter estimates	read.ip.bilog
Read in parameter estimates	read.ip.icl
Read in quadrature	read.qu.icl
Read responses from a file	read.resp
Item-total regressions for the Rasch vs. the interaction model	rim
Linear transformation of the IRT scale	sca
Score a multiple choice test	sco
Binary (true/false) responses to a test	Scored
Example item parameters	Scored2pl
Sum score metric	scoreMetric
Plot observed and predicted scores against ability	scp
Simulate response data	sim
Approximate tetchoric correlation matrix	tet
Non-parametric option curves	tgf
Elementary test-item analysis	tia
Test information function	tif
Test response function	trf
True scores with standard errors	tsc
Original, unscored multiple-choice responses to a test	Unscored
Bias-corrected (Warm's) estimates of ability	wle

Package: irtoys 0.2.2

irtoys: A Collection of Functions Related to Item Response Theory (IRT)

Citation

Readme and manuals

Help Manual

Usage by other packages (reverse dependencies)