STAT 1291: Data Science

Lecture 10 - Data Wrangling: one table (2/2)

Where are we?

• a grammar of data manipulation

  • tibble: for better management of small data sets)
  • five verbs: filter, arrange, select, mutate and summarize)
  • pipe %>%: “then”

Let us now use the slides Data Wrangling with R by Garrett Grolemund, the author of R for data science. This set of slides contains vast information, so stop flipping at page 11, then jump to page 78. There, you will see some familiar terms. We will discuss till page 130. (Don’t worry about the other parts. We will come back for those.)