If you have any questions about Week 4 materials please post
them on Piazza.
If you click on icons such as it would direct you to the appropriate link
where the course material lies.
Notes
Links
Due
The Pipe Operator
Subsetting Data Frames
Changing Variables
Aggregating Data
Exercises for data cleaning and aggregating
In the weekly repo
Importing Data
Required reading. Read especially Section 11.2.1
Data Joins
Exercises for data joins and wrangling
Optional. In the weekly repo
Paper
Instructions are in the repo for weekly materials. Note the new due date.