QUESTION $7$

What is MAPE for forecasting method $2?$

QUARTER ACTUAL TONNAGE UNLOADED FORECAST METHOD $2$ ABSOLUTE PERCENT ERROR $=100(|$ERROR$|/$ACTUAL$)$

$1180175$

$2168177\mathrm{.}50$

$3159172\mathrm{.}75$

$4175165\mathrm{.}88$

$5190170\mathrm{.}44$

$6205180\mathrm{.}22$

$7180192\mathrm{.}61$

$8182186\mathrm{.}30$

Sum of $\%$ errors :

MAPE