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.

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

package-ubuntu-20.04-r-4.0.5#cran#irtoys-0.2.1

<p>Real-life data set containing the responses to a test, scored as true or
false.
</p>

<p>A data set with 472 persons and 18 items.</p>

package-ubuntu-20.04-r-4.0.5#cran#irtoys-0.2.1#docs#Scored

Scored

Description

Format

irtoys

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