The actual sales (demand in thousand units) over the last 6 periods are shown below.
Year/period Actual Sales
1 700
2 724
3 740
4 735
5 765
6 770
(A) Use 3-period weighted moving average with the weights of 0.2, 0.3, and 0.5 to forecast the sales of Period 7.
(B) Use simple exponential smoothing technique with smoothing constant of 0.2 to forecast the sales of Period 7, given the forecast for Period 5 has been 755.
(C) Forecast using the 3-period moving average (MA) model to find the MAD, MSE, and MAPE. What is the forecast for Period 7 with MA(3) model?
A) forecast= 761.5 thousand units