A.1 Installing R
R and Python are the languages of modern data science. The former is slightly more oriented towards data modelling, analysis and visualisation as well as statistical computing. It has a gentle learning curve, which makes is very suitable even for beginners – just like us!
R is available for Windows as well as MacOS, Linux and other Unix-like operating systems. It can be downloaded from the R project website, see https://www.r-project.org/ (or installed through system-specific package repositories).
From now on we assume that you have installed the R environment.