Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. In applying statistics to, e.g., a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model process to be studied.
The R Project for Statistical Computing
R is a free software environment for statistical computing and graphics.
RStudio makes R easier to use. It includes a code editor, debugging & visualization tools.
Data Science Wars: R vs Python
While Python is often praised for being a general-purpose language with an easy-to-understand syntax, R's functionality is developed with statisticians in mind, thereby giving it field-specific advantages such as great features for data visualization.