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, BILOGMG, and ltm), ability estimation (MLE, BME, EAP, WLE, plausible values), item and person fit statistics, scaling methods (MM, MS, StockingLord, and the complete Hebaera method), and a rich array of parametric and nonparametric (kernel) plots. Estimates and plots Haberman's interaction model when all items are dichotomously scored.
Package details 


Author  Ivailo Partchev 
Date of publication  20161010 13:51:54 
Maintainer  Ivailo Partchev <partchev@gmail.com> 
License  GPL (>= 2) 
Version  0.2.0 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.