Develop a last period forecast for periods $2$ through $6.$

Round all answers, including forecasts, to $1$ decimal place. Use rounded answers for error calculations and round error calculations to $1$ decimal place.

Note: Percentages will be in the form xx$.$x$\%($i$.$e$.,1$ decimal place in $\%$ format$).$

Period Demand

$1221$

$2247$

$3228$

$4233$

$5240$

$6152$

MFE $=$

MAD $=$

MAPE $=($answer in the form xx$.$x$\%)$

MSE $=$