A Manager Has Been Using a Certain Technique to Forecast

Essay

A manager has been using a certain technique to forecast demand for gallons of ice cream for the past six periods. Actual and predicted amounts are shown below. Would a naive forecast have produced better results? $$\begin{array} { l l l } \text { Period } & \text { Demand } & \text { Forecast } \\\hline 1 & 90 & 87 \\2 & 85 & 88 \\3 & 91 & 87 \\4 & 92 & 89 \\5 & 95 & 90 \\6 & 88 & 92\end{array}$$