Visualizing median GDP per capita by continent
A bar plot is useful for visualizing summary statistics, such as the median GDP in each continent.
This exercise is part of the course
Introduction to the Tidyverse
Exercise instructions
- Use
group_by()
andsummarize()
to find the median GDP per capita within each continent in the year 1952, calling the output columnmedianGdpPercap
. Use the assignment operator<-
to save it to a dataset calledby_continent
. - Use the
by_continent
dataset to create a bar plot showing the median GDP per capita in each continent.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
library(gapminder)
library(dplyr)
library(ggplot2)
# Summarize the median gdpPercap by continent in 1952
# Create a bar plot showing medianGdp by continent