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Using summarize, slice_max, and count together

In this chapter, you've learned to use six dplyr verbs related to aggregation: count(), group_by(), summarize(), ungroup(), slice_max(), and slice_min(). In this exercise, you'll combine them to answer a question:

In how many states do more people live in metro areas than non-metro areas?

Recall that the metro column has one of the two values "Metro" (for high-density city areas) or "Nonmetro" (for suburban and country areas).

counties_selected <- counties %>%
  select(state, metro, population)

This exercise is part of the course

Data Manipulation with dplyr

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Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

counties_selected %>%
  # Find the total population for each combination of state and metro
  ___
  
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