Unscored

<p>Real-life data set containing the responses to a test, before they have been
recoded as true or false. Can be used with only two functions in the
package: <code>scoreResponses</code> and <code>tgf</code>. All other functions expect binary data,
which can be produced with <code>scoreResponses</code>.</p>

datasets

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.

Ivailo Partchev

irtoys

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

Gunter Maris

Tamaki Hattori

Unscored function

<p>A data set with 472 persons and 18 items. Each item has 4 possible
answers, of which only one is true. There are many NA, which can be treated
as wrong responses.</p>

Unscored: Original, unscored multiple-choice responses to a test

Description

Arguments

Format