Sales for the past 12 months at Computer Success are given here. Month Sales ($) Month Sales ($) January February March April May June 3000 3400 3700 4100 4700 5700 July August September October...

Sales for the past 12 months at Computer Success are given here.

a. Use a three-month moving average to forecast the sales for the months May through December.
b. Use a four-month moving average to forecast the sales for the months May through December.
c. Compare the performance of the two methods by using the mean absolute deviation as the performance criterion. Which method would you recommend?
d. Compare the performance of the two methods by using the mean absolute percent error as the performance criterion. Which method would you recommend?
e. Compare the performance of the two methods by using the mean squared error as the performance criterion. Which method would you recommend?