a$.$ Develop a $4-$month moving average to forecast sales.

b$.$ Use exponential smoothing method with $\backslash$alpha $=0\mathrm{.}3$ smoothing constant to forecast in kate walsh

come. Assume that the initial forecast for January is $10\mathrm{.}5($$$1,000$S$).$

c$.$ Calculate the error and the absolute error for each forecast and summarize your computations in the table below.

d$.$ Compute the MAD as an accuracy measure for evaluating the performance of forecasting method then decide which forecasting method provides a better forecast? Explain

e$.$ Use the better of the two methods to forecast sales for January