Code book and data sets for an introductory manual in R. Comes as a supplementary material to two unpublished (and partly unfinished) files of lecture notes:
Kouprianov, Alexei (2018--2019) Basics of data analysis and graphics in R. Part one: command-line interface, objects, functions, and file management. See at Academia.edu
and
Kouprianov, Alexei (2018--2020) Basics of data analysis and graphics in R. Part two: retrieving summary statistics and drawing basic graphs.