Choosing among the four verbs

In this chapter you've learned about the four verbs: select(), mutate(), relocate(), and rename(). Here, you'll choose the appropriate verb for each situation. You won't need to change anything inside the parentheses.

Questo esercizio fa parte del corso

Data Manipulation with dplyr

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Istruzioni dell'esercizio

Choose the right verb for changing the name of the unemployment column to unemployment_rate
Choose the right verb for keeping only the columns state, county, and the ones containing poverty.
Calculate a new column called fraction_women with the fraction of the population made up of women, without dropping any columns.
Keep only three columns: the state, county, and employed / population, which you'll call employment_rate.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

# Change the name of the unemployment column
counties %>%
  ___(unemployment_rate = unemployment)

# Keep the state and county columns, and the columns containing poverty
counties %>%
  ___(state, county, contains("poverty"))

# Calculate the fraction_women column without dropping the other columns
counties %>%
  ___(fraction_women = women / population)

# Move the region column to before state
counties %>%
  ___(region, .before = state)

Modifica ed esegui il codice