#$3.$ Two independent methods of forecasting based on judgment and experience have been prepared each month for the past $10$ months. The forecasts and actual sales are as follows:

Month

SALES $($ACTUAL$)$

FORECAST I

FORECAST II

$1$

$780$

$772$

$768$

$2$

$789$

$785$

$788$

$3$

$794$

$790$

$792$

$4$

$780$

$784$

$790$

$5$

$776$

$770$

$774$

$6$

$772$

$768$

$770$

$7$

$765$

$761$

$759$

$8$

$775$

$771$

$775$

$9$

$786$

$784$

$788$

$10$

$790$

$788$

$788$

REQUIRED: Compute the MAD and MSE for each forecast. Does either forecast seem superior? Explain.