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:

$\backslash$table$[[$Month$,$SALES $($ACTUAL$),$FORECAST I,FORECAST II$],[1,780,774,775],[2,789,785,788],[3,794,791,792],[4,780,785,787],[5,776,770,774],[7,772,769,770]]$