Question $17$

Calculate MAD.

$\backslash$table$[[$Observation$,\backslash$table$[[$Actual Demand$],[($A$)]],\backslash$table$[[$Forecast$],[($F$)]]],[1,35,---],[2,30,35],[3,26,30],[4,34,26],[5,28,34],[6,38,28]]$

$\mathrm{.}6$

$6\mathrm{.}6$

$5\mathrm{.}3$

$10$