The following time series shows the number of units of a particular product sold over the past six months. Month Units sold (thousands) 1 8 2 3 3 4 4 S 5 12 6 10 a. Compute a 3-month moving average (centered) for the above time series. b. Calculate the mean square error (MSE) for the 3-month moving average. c. Use a = 0.2 to determine the exponential smoothing values for the time series
