Description

Simulated data, Qc-matrix and item parameters for a 20-item test measuring 5 attributes.

Usage

Format

A list with components:

simdat

simulated polytomous responses of 2000 examinees

simQ

artificial Qc-matrix

simItempar

artificial item parameters (category level probability of success for each latent group)

Author(s)

Wenchao Ma, The University of Alabama, wenchao.ma@ua.edu

References

Ma, W., & de la Torre, J. (2020). GDINA: An R Package for Cognitive Diagnosis Modeling. Journal of Statistical Software, 93(14), 1-26.