Data and examples from a multilevel modelling software review as well as other well-known data sets from the multilevel modelling literature.
You can install the development version of mlmRev from GitHub with:
# install.packages("pak")
# pak::pak("annahuynhly/mlmRev")
install.packages("mlmRev", repos = c('https://annahuynhly.r-universe.dev', 'https://cloud.r-project.org'))
Feel free to report issues, ask questions in discussions and submit a pull request.