Two different forecasting techniques were used to forecast demand for cases of bottled water in a store. Actual demand and the two sets of forecasts for seven periods are as follows:

Forecast Demand

Period Demand F$1$ F$2$

$1717271$

$2777476$

$3727573$

$4797675$

$5747774$

$6757875$

$7827976$ b$-1.$ Calculate the MSE for each set of forecasts. $($Round the final answers to $2$ decimal places.$)$

F$1$

F$2$

b$-2.$ Which technique appears to be more accurate?