At the very bottom of the page, click on 'Products' and then 'RStudio Desktop' under 'OPEN SOURCE'.Now that R is installed, you need to download and install RStudio.pkg file, double-click it to open, and follow the installation instructions. Click on the file containing the latest version of R, as appropriate for your hardware.Click on the 'Download R for macOS' link at the top of the page.Select a CRAN location (a mirror site) and click the corresponding link.Click the 'download R' link in the middle of the page under 'Getting Started.'.*.rdata - A file containing one or more R objects or workspaces can be created using save(), and loaded using load().Installing R and R-Studio Mac Users To Install R.*.rds - A file containing a R object can be created using saveRDS(), and loaded using readRDS().What file types are typically associated with R? Packages for literate statistical programming - weaving written reports and analysis code in one document.Rivals (and in many cases, exceeds) SAS and Stata in terms of availability of advanced statistical methods and algorithms, through availability of user-created packages.Available for Windows, Macintosh, and Linux.It also offers an Import-Wizard-like feature that allows users to import CSV, Excel, SAS (*.sas7bdat), SPSS (*.sav), and Stata (*.dta) files into R without having to write the code to do so. (You must install R before you can install RStudio.) Its interface is organized so that the user can clearly view graphs, data tables, R code, and output all at the same time. RStudio is a free, open source IDE (integrated development environment) for R.

R is a free, open source software program for statistical analysis, based on the S language.