7.5 janitor::clean_names() to clean up column names.7.4 tidyr::pivot_wider() to convert from longer-to-wider format.7.3 tidyr::pivot_longer() to reshape from wider-to-longer format.7.2.2 read_excel() to read in data from an Excel worksheet.
7.2.1 Create a new R Markdown and attach packages.6.5.1 Knit, push, & show differences on GitHub.3.8 Assigning objects with % summarize().3.4.3 Writing code in a file vs. Console.2.2 Guiding principles / recurring themes.