Executar:
sudo apt-get -f install
sudo apt-get update
sudo apt-get install r-base
Isso pode resolver o problema, caso contrário, verifique aqui para solução de problemas adicionais.
Os seguintes pacotes têm dependências não atendidas:
r-base : Depends: r-base-core (>= 3.2.1-1utopic0) but it is not going to be installed Depends: r-recommended (= 3.2.1-1utopic0) but it is not going to be installed Recommends: r-base-html but it is not going to be installed r-base-dev : Depends: r-base-core (>= 3.2.1-1utopic0) but it is not going to be installed E: Unable to correct problems, you have held broken packages.