upgrading R version 3.3 in ubuntu 16.04
Solution 1:
Use Michael Rutter's PPA
Rutter's PPA currently has R 3.4.0. To install the PPA open a terminal by pressing Ctrl+Alt+T and enter:
sudo add-apt-repository ppa:marutter/rrutter
Followed by:
sudo apt update
sudo apt full-upgrade
This will upgrade your R installation.
Hope this helps