Reading 6

  R for Data Science

  Book URL: http://r4ds.had.co.nz

Chapter 5: Data transformation

• Section 5.6 – Grouped summaries with summarise(): https://r4ds.had.co.nz/transform.html#grouped-summaries-with-summarise

• Section 5.7 – Grouped mutates (and filters): https://r4ds.had.co.nz/transform.html#grouped-mutates-and-filters