Lesson 8: Practice, Practice, Practice

Let’s examine & improve your skills

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Part 1

Show me a distribution of the departure delay times by each carrier for flights that depart after 5pm

Part 2

Which airports out of JFK, LGA, & EWR have the lowest average departure delay time?

flights %>% filter(!is.na(dep_delay), origin %in% c(‘JFK’, ‘LGA’, ‘EWR’)) %>% group_by(origin) %>% summarise(Average = mean(dep_delay)) %>% ’’ knitr::kable() ```’’’’’