Problem $3-21($Static$)$

Two different forecasting techniques $($F$1$ and F$2)$ were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows:

PREDICTED DEMAND

Period Demand F$1$ F$2$

$1686666$

$2756868$

$3707270$

$4747172$

$5697274$

$6727076$

$7807178$

$8787480$

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