Explanation 1
Download and open the matching .pkg file, then complete the R installation.
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Lesson 3 of 6
Identify your Mac processor, install the matching edition of R, and then add RStudio Desktop.
macOS setup
Open Apple Menu > About This Mac. An M-series processor is Apple silicon; older Macs may use Intel. On the official R page, choose the arm64 package for Apple silicon or the x86_64 package for an Intel Mac.
Explanation 1
Download and open the matching .pkg file, then complete the R installation.
Explanation 2
Download the free macOS edition of RStudio Desktop after R is installed.
Explanation 3
Install RStudio and open it from the Applications folder.
Resource
Open the official CRAN page and choose arm64 for Apple silicon or x86_64 for Intel.
Download R for macOSResource
Open Posit's official RStudio Desktop download instructions and choose the free macOS installer.
Download RStudio DesktopMatch the processor
Selecting the wrong processor version may prevent R from opening. Check About This Mac before downloading.