Summarizing by year
The summarize() function is especially useful because it can be used within groups.
For example, you might like to know how much the average "agreeableness" of countries changed from year to year. To examine this, you can use group_by() to perform your summary not for the entire dataset, but within each year.
Bu egzersiz, kursun bir parçasıdır
Case Study: Exploratory Data Analysis in R
Egzersiz talimatları
Add a group_by() to your code to summarize() within each year.
Uygulamalı etkileşimli egzersiz
Bu egzersizi bu örnek kodu tamamlayarak deneyin.
# Change this code to summarize by year
votes_processed %>%
summarize(total = n(),
percent_yes = mean(vote == 1))