- Download .pkg file from https://cran.rstudio.com/bin/macosx/
- Run the .pkg
- Fix a issue http://stackoverflow.com/questions/9689104/installing-r-on-mac-warning-messages-setting-lc-ctype-failed-using-c
- Download and Install RStudio from https://www.rstudio.com/products/rstudio/download3/
- Download and Install Xquartz from https://www.xquartz.org/