Week 4: Data, A Field Guide
 Prof. Jack Reilly
 Fall 2026

Due This Week: Problem Set 4
Lecture: A Field Guide to Data
Download slides (PDF)
Readings & Reference Material
•	DMSS, ch 3 & 4
•	RDS, chs 7 & 8
•	FCSP, ch 5.4-5.6
•	Tidyverse cheatsheets: https://rstudio.github.io/cheatsheets/, especially:
–	data tidying with tidyr: html and pdf
–	data transformation with dplyr: html and pdf
–	data import with readr: html and pdf
–	data visualization with ggplot2: html and pdf
Computer Work
In case you have not yet done so, install the tidyverse series of packages in your local R installation.
Due Next Week: Problem Set 5