mean absolute deviation and mean absolute percent error performance criteria. Does your analysis suggest that sales are trending and if so, by how much? \begin{tabular}{lcccccccccccc} \hline Period & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 \\ \hline Sales & 586 & 637 & 638 & 732 & 663 & 615 & 755 & 696 & 760 & 703 & 656 & 748 \\ \hline \end{tabular} (i) Obtain the trend projection with regression forecast. The forecast for week 13 is (Enter yow response rownded to the nearest whole nwmber.) Specify the mean absolute deviation (MAD) and mean absolute percent error (MAPE). (Enter yow responses rownded to two decimal places.) (ii) Obtain the exponential smoothing forecast. The forecast for week 13 is (Enter yow response rownded to the nearest whole nwmber.) Specify the mean absolute deviation (MAD) and mean absolvte percent error (MAPE). (Enter yow responses rownded to two decimal places.) Based on MAD, the best method is Based on MAPE, the best method is