Summarizing by year
In a previous exercise, you found the median life expectancy and the maximum GDP per capita in the year 1957. Now, you'll perform those two summaries within each year in the dataset, using the group_by verb.
This exercise is part of the course
Introduction to the Tidyverse
Exercise instructions
- Find the median life expectancy (
lifeExp) and maximum GDP per capita (gdpPercap) within each year, saving them intomedianLifeExpandmaxGdpPercap, respectively.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
library(gapminder)
library(dplyr)
# Find median life expectancy and maximum GDP per capita in each year