Use for the following $3$ questions:

Two different methods, A and B$,$ are used to forecast demand for T$-$shirts. The actual and forecasted demands for the past $5$ months are as follows:

$\backslash$table$[[$Actual$,$A$,$B$],[23,19,20],[15,13,15],[11,19,23],[27,25,20],[22,22,20]]$

Method A MAD $=(1$ decimal$)$