शुरू करेंमुफ़्त में शुरू करें

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.

यह अभ्यास पाठ्यक्रम का हिस्सा है

Data Manipulation with dplyr

पाठ्यक्रम देखें

अभ्यास निर्देश

  • Use a single verb to add a proportion_men column with the fractional male population and also keep the state, county, and population columns.
  • Filter for counties with a population of at least ten thousand (10000).
  • Arrange counties in descending order of their proportion of men.

इंटरैक्टिव व्यावहारिक अभ्यास

इस अभ्यास को इस नमूना कोड को पूरा करके आज़माएँ।

counties %>%
  # Keep state, county and add proportion_men
  ___
  # Filter for population of at least 10,000
  ___
  # Arrange proportion of men in descending order 
  ___
कोड संपादित करें और चलाएँ