Windows

1. Open http://www.r-project.org/ in your browser.
2. Click on “CRAN”. You’ll see a list of mirror sites, organized by country.
3. Select a site near you.
4. Click on “Windows” under “Download and Install R”.
5. Click on “base”.
6. Click on the link for downloading the latest version of R (an .exe file).
7. When the download completes, double-click on the .exe file and answer the usual questions.

OS X

1. Open http://www.r-project.org/ in your browser.
2. Click on “CRAN”. You’ll see a list of mirror sites, organized by country.
3. Select a site near you.
4. Click on “MacOS X”.
5. Click on the .pkg file for the latest version of R, under “Files:”, to download it.
6. When the download completes, double-click on the .pkg file and answer the usual questions.

Linux or Unix
The major Linux distributions have packages for installing R. Here are some examples:

Use the system’s package manager to download and install the package. Normally, you will need the root password or sudo privileges; otherwise, ask a system administrator to perform the installation.

install.packages()

> help("install.packages")
> install.packages("package name")

packages?

• R 은 base와 package들로 이루어져 있음
• base를 제외하고 방법적으로 독특하거나 많이 사용하지 않는 통계기능들은 package로 개발이 되어 개별적으로 인스톨하도록 함. 따라서, 통계방법을 사용하면서 점차 특별한 packages들을 사용하게 될 수 있음.