This problem refers to the data provided in the nycflights$13$

package. Airport codes for the three New York City airports can be computed from the

origin variable in the flights table packages using unique$().$

$(1)$ Use the flights table compute average and median departure delays $($as recorded

in the dep$\_$delay variable$)$ for each of the three New York City airports, omitting

missing values. Present the results as a nicely formatted table and comment on the

results.

$(2)$ Use density plots to compare the distributions of the air time $($as recorded in the

air$\_$time variable$)$ for flights originating from each of the three New York City airports.

What differences do you see?

There are several options for displaying the densities:

$-$ a single plot, using color or fill and alpha to distinguish the distributions;

$-$ a faceted plot with one density per facet $($think about how to arrange the facets$)$;

$-$ a ridge line plot.

Consider all three approaches and comment on their advantages and disadvantages.