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]