References
Kassambara, Alboukadel. 2019. Datarium: Data Bank for Statistical Analysis and Visualization. https://CRAN.R-project.org/package=datarium.
Ross, Sheldon M. 2017. “Introductory Statistics.” In Introductory Statistics (Fourth Edition), edited by Sheldon M. Ross, Fourth Edition, 797–800. Oxford: Academic Press. https://doi.org/https://doi.org/10.1016/B978-0-12-804317-2.00031-X.