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xxIRT (version 2.0.3)

Practical Item Response Theory and Computer-Based Testing in R

Description

An implementation of item response theory and computer-based testing based on the 3-parameter-logistic (3PL) model, with functions to perform (i) parameter estimation, (2) automated test assembly, (3) computerized adaptive testing (CAT) simulation, and (4) multistage assembly and simulation. More documentation at .

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Version

Install

install.packages('xxIRT')

Monthly Downloads

237

Version

2.0.3

License

GPL (>= 3)

Issues

5

Pull Requests

0

Stars

25

Forks

15

Maintainer

Xiao Luo

Last Published

August 30th, 2017

Functions in xxIRT (2.0.3)

cat_sim

Computerized Adaptive Testing (CAT) Simulation
estimation

Estimation of 3PL Model
ata

Automated Test Assembly (ATA)
ataHelpers

ATA Helper Functions
freq

Frequency
irt_stats

IRT Utility Functions
mstHelpers

MST Helper Functions
mst_sim

MST Simulation
model_3pl

3-Parameter-Logistic Model
mst

Computerized Multistage Testing (MST)
rmse

Root Mean Square Error