Summarizing by continent and year
Instead of grouping just by year, or just by continent, you'll now group by both continent and year to summarize within each.
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 combination of continent and 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 continent/year combination