$\backslash$table$[[1,17,],[2,13,],[3,15,],[4,11,],[5,15,],[6,13,]]$

MSE: $$

The forecast for week $7$: $$

$($d$)$ Compare the three$-$week moving average forecast with the exponential smoothing forecast using $=0,2.$ Which appears to provide the better forecast based an MSE?

$$

Explain:

Using this approach results in a $$ ISE.

$($e$)$ Use trial and error to find a value of the exponential smoothing coefficient o that yields the minimum MSE. Do not found intermediate calculaticns. Use a two$-$decimal digit precision for the exponential smoothing coefficient.

alpha: $$