Question: using the following data in excel complete the chart and compute, the MAD and MAPE and tracking signal. please include formulas for excel. begin{tabular}{|c|c|c|} hline

\begin{tabular}{|c|c|c|} \hline Month & Forecast & ActualDemand \\ \hline January & 100 & 105 \\ \hline February & 200 & 198 \\ \hline March & 300 & 250 \\ \hline April & 400 & 450 \\ \hline May & 450 & 500 \\ \hline June & 400 & 398 \\ \hline July & 300 & 250 \\ \hline August & 200 & 225 \\ \hline \end{tabular} \begin{tabular}{|c|c|c|} \hline Month & Forecast & ActualDemand \\ \hline January & 100 & 105 \\ \hline February & 200 & 198 \\ \hline March & 300 & 250 \\ \hline April & 400 & 450 \\ \hline May & 450 & 500 \\ \hline June & 400 & 398 \\ \hline July & 300 & 250 \\ \hline August & 200 & 225 \\ \hline \end{tabular}
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