5. airquality

data("airquality") #load airquality data set into your RStudio environment

(1 pts) Write a couple of sentences describing the airquality data and list at least 2 commands that you used.

(1 pts) Find an expression involving summarise() and airquality that will answer the following questions.

Compute the mean Temperature.

(3 pts) Find an expression involving summarise(), group_by(), and airquality that will answer the following questions.

How many measurements for each month?

Compute the median Temperature for each month.

Find the maximum and minimum wind speed for each month.