Scored2pl


  Item parameter estimates for the 2PL model, estimated
  with <code>ltm</code> from the example data set <code>Scored</code>.
  These are provided as a check, and to speed up the
  examples for the various functions in the package.


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

Scored2pl function

A list of two matrices: <code>est</code> contains the parameter estimates,
and <code>se</code> contains the standard errors (see also <code>est</code>).

Scored2pl: Example item parameters

Description

Arguments

Format