simCAT_DC {irtQ}R Documentation

Simulated Single-Item Format CAT Data

Description

A simulated dataset containing an item pool, sparse response data, and examinee ability estimates, designed for single-item computerized adaptive testing (CAT).

Usage

simCAT_DC

Format

A list of length three:

item_pool

A data frame in item metadata format containing 100 dichotomous items.

  • Items 1–90: Generated and calibrated under the IRT 2PL model.

  • Items 91–100: Generated under the IRT 3PL model but calibrated using the 2PL model.

response_data

A sparse matrix of item responses from 10,000 examinees.

theta_estimates

A numeric vector of ability estimates for the 10,000 examinees.

Author(s)

Hwanggyu Lim hglim83@gmail.com


[Package irtQ version 1.0.0 Index]