9/12/2022

Problem session for Activities 5 and 6 will be on Wednesday

Chapter 4 - Data Wrangling on one table

• Complete discussion of DataWrangling1.R

Chapter 5 - Data Wrangling on multiple tables- see DataWrangling2.R on our Google Drive folder

• A grammar for data wrangling (dplyr package) continued
  • inner_join() - match up the rows of two data tables
  • left_join() - the rows of the first table are always returned, regardless of whether there is a match in the second table

Activity 6 - we will have a PS on Wednesday

• Replicate the data wrangling used in the extended example for Manny Ramirez. My challenge to you is to do a similar example for another player.

Please read Sections 6.1 and 6.2 for class on Wednesday.