Look at the boxplots by month in Exercise 5. The long low whisker for the year 2001 is due to the terrorist attacks of 9/11. Do you think the data for the months affected by that attack should be set aside in any overall analysis of load factors?

Data From  Exercise 5

Here is a display of the international load factors by month for the period from 2000 to 2016:

Discuss the patterns you see in this display.

International Load Factor 82.5 75.0 67.5 60.0 T | T 0 HOH H } HI 1 2 3 4 5 6 7 8 9 10 11 12 Month