AS you can see in the following table, the demand for heart transplant surgery at Washington General Hospital has decreased steadily in the past few years:
Year 1 2 3 4 5 6
Heart Transplants 60 58 56 52 50 40
a) Compute a 3-year weighted moving average for years 4 thru 6 in which heart transplant surgeries in the most recent year is given a weight of 6, and surgeries in the other two years are each given a weight of 3.
b) Compute the MAPE.
c) How do you interpret the answer in part(b)?