Unscored

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>sco</code>
  and <code>npp</code>. All other functions expect binary data,
  which can be produced with <code>sco</code>.

datasets

Provides 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, and a variety of
        functions useful with IRT models.

Ivailo Partchev

irtoys

Simple interface to the estimation and plotting of IRT models

Unscored function

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.

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

Description

Arguments

format