Living-donor kidney transplants are becoming more common. Often a living donor has chosen to donate a kidney to a relative with kidney disease. The following data appeared in a USA Today article on organ transplants ("Kindness Motivates Newest Kidney Donors," June 19, 2002):
a. Construct a time series plot for the number of living-donor kidney transplants where the donor is a relative of the recipient.
b. Describe the trend in this plot.
c. Use the data from 1994 and 2001 to construct a comparative bar chart for the type of donation (relative or unrelated).
d. Write a few sentences commenting on your display.