Mutate, filter, and arrange
In this exercise, you'll put together everything you've learned in this chapter (select()
, mutate()
, filter()
and arrange()
), to find the counties with the highest proportion of men.
This exercise is part of the course
Data Manipulation with dplyr
Exercise instructions
- Use a single verb to add a
proportion_men
column with the fractional male population and also keep thestate
,county
, andpopulation
columns. - Filter for counties with a population of at least ten thousand (
10000
). - Arrange counties in descending order of their proportion of men.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
counties %>%
# Keep state, county and add proportion_men
___
# Filter for population of at least 10,000
___
# Arrange proportion of men in descending order
___