Learn R Programming

⚠️There's a newer version (2.5.2) of this package.Take me there.

equateIRT (version 2.4.0)

IRT Equating Methods

Description

Computation of direct, chain and average (bisector) equating coefficients with standard errors using Item Response Theory (IRT) methods for dichotomous items (Battauz (2013) , Battauz (2015) ). Test scoring can be performed by true score equating and observed score equating methods. DIF detection can be performed using a Wald-type test (Battauz (2019) ). The package includes tests to access the stability of the equating transformations (Battauz(2022) ).

Copy Link

Version

Install

install.packages('equateIRT')

Monthly Downloads

442

Version

2.4.0

License

GPL-3

Maintainer

Michela Battauz

Last Published

March 26th, 2024

Functions in equateIRT (2.4.0)

Item Parameter Estimates and Covariance Matrices of a Three-Parameter Logistic Model

Test on Chain Equating Coefficients

Import Item Parameters Estimates and Covariance Matrices from IRT Software

Item Parameter Estimates and Covariance Matrices of a Two-Parameter Logistic Model

Summarizing Estimated Equating Coefficients

summary.ceqclist

Summarizing a List of Estimated Chain Equating Coefficients

Summarizing Bisector Equating Coefficients

Estimated Coefficients and Covariance Matrix of IRT Models

Extract Item Parameters

Summarizing Estimated Chain Equating Coefficients

Item Parameter Estimates and Covariance Matrices of a Rasch Model

summary.eqclist

Summarizing a List of Estimated Direct Equating Coefficients

Simulated Data Set with DIF

Extract Equating Coefficients

Direct Equating Coefficients Between All Pairs of a List of Forms

Item Parameters Conversion

equateIRT-package

IRT Equating Methods

Bisector Equating Coefficients

Direct Equating Coefficients

Chain Equating Coefficients

Simulated Data Sets