Consider the quarterly sales data for Wothington Kilbourne Health Club shown here:

Year 1: 4 2 1 5 Total= 12

Year 2: 6 4 4 14 Total= 28

Year 3: 10 3 5 16 Total=34

Year 4: 12 9 7 22 Total=50

Year 5: 18 10 13 35 Total= 76

A. Develop a four-period moving average model and compute MAD, MAPE, and MSE for your forecasts.

B. Find a good value of standard deviation for a single exponential smoothing model and compare your results to part A.

HInt: use the stepwise regression technique linking LOS to the variables Aspiriin and LVSD