$\backslash$#$4).$ Substitute this problem for Problem $\backslash$# $4$ on exam in attachment$)-$Calculate the MAD, revised MAD and the Revised Forecast for months $\backslash (1-6\backslash )$ for the following three groups, where the Forecast stands for Forecast Demand. Has your forecast improved $?$ Tell me how would you go about improving the revised forecast$($ for each of the three groups$)$without actually doing so$.($Hint $-$process is recursive$)?$

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