Take a closer look at the package r-recommended. There is also a bunch of packages extending R to different purposes.
Ubuntu or Debian itself) is as simple as to type in sudo aptitude install r-base or sudo apt-get install r-base (don't forget that this has to be done as root), or installing the package r-base using your favourite package manager, for example Synaptic. Installing R on Debian-based GNU/Linux distributions (e.g.
This can be a simple text editor (such as Emacs, Vim or Gedit), an integrated development interface (IDE) or graphical user interface (GUI). Once you have installed R, you may want to choose a working environment. This page show how to install R, customize it and choose a working environment.