For the table in Exercise 7:

a) Find the column percentages.

b) Looking at the column percentages in part

a, does the tenure distribution (how long the employee has been with the company) for each educational level look the same?

Comment briefly.

c) Make a segmented or stacked bar chart showing the tenure distribution for each educational level.

d) Is it easier to see the differences in the distributions using the column percentages or the segmented bar chart?

e) How would a mosaic plot help to accurately display these data?