1. 学习
    2. /
  2. 课程
    3. /
  3. Introduction to the Tidyverse
Connected

练习

Filtering for one year

The filter verb extracts particular observations based on a condition. In this exercise you'll filter for observations from a particular year.

说明

100 XP
  • Add a filter() line after the pipe (%>%) to extract only the observations from the year 1957. Remember that you use == to compare two values.