Lecture 5
Importing, Exporting, and Cleaning Data
October 28, 2025
Slides & Code
HTML slides • Raw qmd file • R Code
Data
Billboard Top 100 (2000) • Religion & Income
Suggested Reading (from R for Data Science (2e)1)
Chapter 8: Data import • Chapter 6: Data tidying • Chapter 17: Factors •
Chapter 28: Dates and Times
1 Hadley Wickham, Mine Çetinkaya-Rundel & Garrett Grolemund
Useful Resources
Cheatsheets
tidyr • readr • SAS --> R • Stata to R • forcats • lubridate
Package Websites
tidyr • readr • haven • readxl • googlesheets4 • googledrive •
forcats • lubridate