The goal of dcmdata is to provide easy access to data sets for use with diagnostic classification models.

You can install the released version of dcmdata from CRAN with:

install.packages("dcmdata")

And the development version from GitHub with:

# install.packages("pak")
pak::pak("r-dcm/dcmdata")

dcmdata contains both real and simulated data sets for educational and psychological assessment. For more information on each data set, see the linked reference pages.

• ECPE: Assessment data from the Examination for the Certificate of Proficiency in English, as described in Templin and Hoffman (2013).
• MDM: A short integer multiplication assessment, as described in MacReady and Dayton (1977).

• DTMR: A data set based on the Diagnostic Teachers’ Multiplicative Reasoning assessment, described in Bradshaw et al. (2014).

Contributions are welcome. To ensure a smooth process, please review the Contributing Guide. Please note that the dcmdata project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.