I'm learning R - specifically box plots with notches. I'm working in R Studio online with the flights data. I'm trying to find the median distance between airports for canceled flights vs. non-canceled flights. I thought it would start with creating a new feature for canceled flights and I entered the code below, but I keep getting error messages. This is what I have to create a new feature:

mutate(canceled = is.na(dep_time), sched_hour = sched_dep_time %/% 100, sched_min = sched_dep_time %% 100, sched_dep_time = sched_hour + sched_min / 60) %>%

Or is this not the correct first step?

And after the above first step, I thought this would be the next step to create a box plot with notches:

ggplot(data = flights) + geom_boxplot(mapping =aes(x=distance, y = canceled), notch = TRUE)

Please help.