1. 학습
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  2. 강의
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  3. Introduction to the Tidyverse
Connected

연습 문제

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.

지침

100 XP
  • Find the median life expectancy (lifeExp) and maximum GDP per capita (gdpPercap) within each combination of continent and year, saving them into medianLifeExp and maxGdpPercap, respectively.