Install the nycflights$13$ package into R$.($You can use the $$Packages$$ tab which has an $$install$$ button. If you are not using RStudio, given the R command install.packages$("$nycflights$13"))$

Once the package is installed, you can access the flights data table with this command:

The codebook is available with

Using the codebook and examining the data table with the View$()$ command $($hint: you$$ll need to give flights as an argument to View$()),$ answer these questions:

How many variables are there?

How many cases are there?

What is the meaning of a case? $($Meaning$$ refers to the kind of entity, for instance, $$airport$$ or $$airline$$ or $$date$.$ Hint: the case in flights is not any of these things.$)$

For each variable, is the variable quantitative or categorical?

For the variables air$\_$time and distance, what are the units?