Appendix A Data Wrangling with R

R is statistical software widely used for data analysis and graph generation, and it provides an integrated environment for statistical analysis, particularly for databases. This means that analysis, programming, visualization, and data management processes can be carried out within the same environment. This appendix uses the tidyverse approach, and in particular the dplyr package, to organize a logical workflow for working with databases: loading the data, inspecting it, selecting variables, filtering records, sorting rows, creating variables, and producing summaries.