r-irtoys 0.2.1 Collection of functions related to Item Response Theory (IRT)
This package provides a collection of functions useful in learning and practicing Item Response Theory (IRT), which can be combined into larger programs. It 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. It estimates and plots Haberman's interaction model when all items are dichotomously scored.
- Website: https://cran.r-project.org/package=irtoys
- License: GPL 2+
- Package source: cran.scm
- Patches: None
- Builds: x86_64-linux, i686-linux