The edmdata package (GitHub, Website) provides data sets from various administered assessments that can be used in diagnostic modeling. These data sets have been analyzed in various papers that introduced new methodology as part of the application section. With the release of Chen, Yinghan, Liu, Y., Culpepper, S. A., & Chen, Y. (2021), we have incorporated into edmdata the Elementary Probability Theory Assessment from the {pks} package. When compared to {pks}, the data has been re-formatted from the single probability data frame object into a single trial matrix containing only part one …