• dplyr cheat sheet:
    • Hard copy
    • In RStudio -> Menu bar -> Help -> Cheatsheets -> Data Manipulation with dplyr, tidyr
  • After-Class Update from Lec02
  • Keyboard shortcuts:
    • CMD-Enter for Macs and CTRL-Enter for Windows
    • Up
    • CMD+Shift+M for Macs and CTRL+Shift+M for Windows
  • Point out Datacamp resource


  • Slides: Describing what a CSV file is and introducing the different ways of joining different data sets.
  • In-class exercise:
    • Packages to install: readr
    • Code: Lec03.R
    • Data: states.xlsx Excel file

After-Class Updates