Consider the Sales for Six Consecutive Weeks for Sam's Strawberries $$\begin{array} { c c } \text { Week } & \text { Sales } \\\hline 1 & 16 \\2 & 18 \\3 & 14 \\4 & 10 \\5 & 20 \\6 & 22\end{array}$$

Essay

Consider the sales for six consecutive weeks for Sam's Strawberries. The sales are in "flats" sold.
$$\begin{array} { c c } \text { Week } & \text { Sales } \\\hline 1 & 16 \\2 & 18 \\3 & 14 \\4 & 10 \\5 & 20 \\6 & 22\end{array}$$
a. Using a 3-period moving average, forecast the sales for weeks four through six.
b. Use exponential smoothing with $\alpha$ = .3 to forecast sales for weeks four through six.
c. Use linear regression time series) to develop a prediction equation that will forecast sales. Then use that prediction equation to get forecasts for weeks four through six.
d. Use MAD to pick the best forecasting method of A through C.