R

First, you need to download and install the R programming language itself. You can use R to conduct analysis, but most people prefer RStudio for its interface. If you use RStudio, you still need to download R.

You can download R directly from the following website:

• The R Project for Statistical Computing: https://www.r-project.org/
• Click on CRAN under Download tab
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• Pick any of the options under United States of America
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• Click on Download R for Linux or macOS or Windows
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  • For macOS users, downloading is more straightforward. Click on the download file depending on the version of your macOS.
• Click on Install R for the first time (we also recommend downloading and installing Rtools for future use)
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• Click on Download R and install it (version name might chance depending on year)
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Second, most R users will want to download and install RStudio. RStudio is an interface created by Posit that provides a relatively use-friendly interface for working with R code, data, and analyses. After you have installed R, you can download and install RStudio from the following website:

• RStudio: https://posit.co/downloads/
• Click on the Download RStudio button
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• Click on Download RStudio for Windows button (this will change to macOS if you are using macOS)
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• Make sure to install it to use RStudio.
• In case you need it, older versions of RStudio: https://global.rstudio.com/products/rstudio/older-versions/