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  3. Data Manipulation with dplyr
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연습 문제

Summarizing

The summarize() verb is very useful for collapsing a large dataset into a single observation.

counties_selected <- counties %>%
  select(county, population, income, unemployment)

지침

100 XP
  • Summarize the counties dataset to find the following columns: min_population (with the smallest population), max_unemployment (with the maximum unemployment), and average_income (with the mean of the income variable).