A. Compute a three quarter moving average forecast for quarter 4 through 13 and compute the forecast error for each quarter.
B. Compute a five quarter moving average forecast for quarters 6 through 13 and compute the forecast error for each quarter.
C. Compute a weighted three quarter moving average forecast using weights (weighing factors) of .50 .33 and .17 for the most recent next recent and most distant data respectively and compute the forecast error for each quarter.
D. Compare the forecasts developed in (a) (b) and (c) using cumulative error. Which forecast appears to be most accurate? Do any of them exhibit any bias?