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.
This exercise is part of the course
Data Manipulation with dplyr
Exercise instructions
- 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.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
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
___