The table shows the actual number of customers and forecast values per day at an automotive service center for the last two weeks.

1. Calculate the Mean Absolute Deviation (MAD).
2. Calculate the Mean Square Error (MSE).

\begin{tabular}{|c|c|c|c|c|c|c|c|c|c|c|c|c|} \hline Day & Mon & Tue & Wed & Thu & Fri & Sat & Mon & Tue & Wed & Thu & Fri & Sat \\ \hline Actual & 15 & 16 & 21 & 19 & 25 & 21 & 21 & 25 & 24 & 19 & 23 & 22 \\ \hline Forecast & 22 & 22 & 23 & 15 & 24 & 16 & 17 & 16 & 21 & 22 & 19 & 25 \\ \hline \end{tabular}