Exercise

Filtering and arranging

You'll often need to use the pipe operator (%>%) to combine multiple dplyr verbs in a row. In this case, you'll combine a filter() with an arrange() to find the highest population countries in a particular year.

Instructions

100 XP

Use filter() to extract observations from just the year 1957, then use arrange() to sort in descending order of population (pop).

Take Hint (-30 XP)