Forecasting sales and mean square error of tennis shoes in a sports store in the town's mall
6. Observed monthly sales of a popular brand tennis shoe at a medium-sized sports store at the town?s mall over the first six months of the year are given in the following table. Month Jan Feb Mar Apr May June July Aug Demand 26 30 33 45 36 40 38 42 a) Use a three-month moving average method to forecast the sales for the mo