Counting citizens by state
You can weigh your count by particular variables rather than finding the number of counties. In this case, you'll find the number of citizens in each state.
counties_selected <- counties %>%
select(county, region, state, population, citizens)
Это упражнение является частью курса
Data Manipulation with dplyr
Инструкции к упражнению
- Count the number of counties in each state, weighted based on the
citizenscolumn, and sorted in descending order.
Интерактивное практическое упражнение
Попробуйте выполнить это упражнение, дополнив этот пример кода.
# Find number of counties per state, weighted by citizens, sorted in descending order
counties_selected %>%
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