Select helpers
In the video you learned about the select helper starts_with(). Another select helper is ends_with(), which finds the columns that end with a particular string.
Deze oefening maakt deel uit van de cursus
Data Manipulation with dplyr
Oefeninstructies
- Select the columns
state,county,population, and all those that end withwork. - Filter just for the counties where at least 50% of the population is engaged in public work.
Praktische interactieve oefening
Probeer deze oefening eens door deze voorbeeldcode in te vullen.
counties %>%
# Select the state, county, population, and those ending with "work"
___
# Filter for counties that have at least 50% of people engaged in public work
___