Head and Tail

• head and tail are two commands that can help us quickly look near the beginning or end of long lists of values.
• They work with both vectors and datasets
• They expect the object in question as their first argument, and you can use the pipe operation for that.
• They optionally take as a second argument the number of entries to show, with the default being 6.

# Ten Most frequent county names
tally(~name, data=counties) %>% sort() %>% tail(10)
# Ten states with smallest number of counties
tally(~state, data=counties) %>% sort() %>% head(10)