dplyr: Grouping

The group_by function in dplyr lets use other functions like summarize and mutate on subgroups within a data frame rather than operating on entire columns all at once. This is useful for generating statistics and creating new variables according to the levels of categorical variables.

Link to the Kaggle Notebook code used for this video series:
https://www.kaggle.com/hamelg/dplyr-in-r

View the whole dplyr in R playlist here:
   • dplyr: Getting Started  

dplyr cheat sheet from RStudio:
https://www.rstudio.com/wp-content/up...

dplyr documentation:
https://cran.r-project.org/web/packag...


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