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irtProb (version 1.0)

Utilities and Probability Distributions Related to Multidimensional Person Item Response Models (IRT)

Description

The irtProb package was mainly developped to compute IRT probability distributions.

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Version

Install

install.packages('irtProb')

Monthly Downloads

13

Version

1.0

License

GPL (version 2 or later)

Maintainer

Gilles Raiche

Last Published

February 15th, 2017

Functions in irtProb (1.0)

m4plSummary

Summary of the Results of Estimation with the m4pl Models
4pl

One, Two, Three and Four Parameters Logistic Distributions
irtProb-package

Utilities and Probability Distributions Related to Multidimensional Person Item Response Models (IRT)
PersonParametersEstimate

Estimation of the Personal Parameters from the mpl4 Logistic Model
m4plModelShow

Results For Each Subject To Each Model
graphics

Graphic Functions to Illustrate Response Curves and Parameter Estimation
utilities

Utility Functions
likelihoodCurve

Functions to Graph m4pl Likelihood Curves
derivatives

First and Second Derivatives
modelChoose

Functions For Choosing The m4pl Best Model(s)
responses4pl

Simulation of Response Patterns and Computation of the Probability of the Patterns
modelShowClassFunctions

Functions To Manipulate modelShow Class Objects
m4pl

Multidimensional One, Two, Three and Four Person Parameters Logistic Distributions
conversion

Functions to Convert from and to CTT and IRT Models
responsesm4pl

Simulation of Response Patterns and Computation of the Probability of the Patterns from m4pl
checkAdequation

Function to Check the Adequation of the Second Derivatives