The table below shows actual and forecasted nubmers of accounts serviced by a company. Compute MAD, MSE, and MAPE for the following data, showing actual and forecasted numbers of accounts serviced. (Enter whole number values in the table below for Error, IErrorl, and Error^2. Round the IErrorl/Actual to three decimals. Enter 0 where necessary, do not leave any cells blank. Negative values should be indicated with a minus sign, i.e. -2 . Round MAD, MSE and MAPE to 3 decimal places.) \begin{tabular}{|c|c|c|c|c|c|c|} \hline Period & Actual & Forecast & A-F(Error) & |Error| & Error 2 & (Error|/Actual) 100 \\ \hline 1 & 628 & 625 & & & & \\ \hline 2 & 627 & 627 & & & & \\ \hline 3 & 626 & 630 & & & & \\ \hline 4 & 632 & 632 & & & & \\ \hline 5 & 634 & 634 & & & & \\ \hline 6 & 636 & 636 & & & & \\ \hline 7 & 638 & 638 & & & & \\ \hline 8 & 642 & 641 & & & & \\ \hline \end{tabular} \begin{tabular}{|l|l|} \hline MAD & \\ \hline MSE & \\ \hline MAPE & \\ \hline \end{tabular}