Summarizing Relationships, Tidying and Joining Data

Readings

• For summarizing relationships, see QSS 3.6 and MD 5.1.1.
• For pivoting and tidy data, see MD Ch 4.
• For more on joins, see the chapter 20 in R for Data Science.

Data

• Reinstall the TPDstat data package if the current package does not have the dataset(s) from the lecture

remotes::install_github("seungho-an/TPDdata")

• We will also use data from the nycflights13 package that you can install with:

install.packages("nycflights13")

Slides and Code

• Summarizing relationships, writing our own functions, causality review, pivoting longer, joining data

  • PDF slides
  • PDF handout version (no incremental slides)
  • Code: covid_votes.Rmd
  • Code: lecture-05.Rmd