Actual demand for a product for the past three months was
Three months ago ............. 400 units
Two months ago ............. 350 units
Last month ............. 325 units

a. Using a simple three- month moving average, make a forecast for this month.
b. If 300 units were actually demanded this month, what would your forecast be for next month?
c. Using simple exponential smoothing, what would your forecast be for this month if the exponentially smoothed forecast for three months ago was 450 units and the smoothing constant was 0.20?