Given the actual sales for the following periods: Period Sales Volume 10,000 12,400 14,250 15.750 20,500 18,500 15,750 20,500 21,500 22,500 1 12 3 14 15 6 7 8 9 10 what would the forecast have been for period 7 using a four-period moving average?

Given the actual sales for the following periods: what would the forecast have been for period 7 using a four-period moving average