Visualizing median GDP per capita per continent over time
In the last exercise you were able to see how the median life expectancy of countries changed over time. Now you'll examine the median GDP per capita instead, and see how the trend differs among continents.
Questo esercizio fa parte del corso
Introduction to the Tidyverse
Istruzioni dell'esercizio
- Summarize the gapminder dataset by continent and year, finding the median GDP per capita (
gdpPercap) within each and putting it into a column calledmedianGdpPercap. Use the assignment operator<-to save this summarized data asby_year_continent. - Create a scatter plot showing the change in
medianGdpPercapby continent over time. Use color to distinguish between continents, and be sure to addexpand_limits(y = 0)so that the y-axis starts at zero.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
library(gapminder)
library(dplyr)
library(ggplot2)
# Summarize medianGdpPercap within each continent within each year: by_year_continent
# Plot the change in medianGdpPercap in each continent over time