Summarizing the median life expectancy in 1957
Rather than summarizing the entire dataset, you may want to find the median life expectancy for only one particular year. In this case, you'll find the median in the year 1957.
Questo esercizio fa parte del corso
Introduction to the Tidyverse
Istruzioni dell'esercizio
- Filter for the year 1957, then use the
median()function within asummarize()to calculate the median life expectancy into a column calledmedianLifeExp.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
library(gapminder)
library(dplyr)
# Filter for 1957 then summarize the median life expectancy