Based on the given information below

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

Month...Sales.......Forecast

$1..........\mathrm{.}152$

$2..........\mathrm{.}143$

$3..........\mathrm{.}139$

$4..........\mathrm{.}150..........\mathrm{.}144\mathrm{.}67$

$5..........\mathrm{.}141..........\mathrm{.}144\mathrm{.}00$

$6..........\mathrm{.}148..........\mathrm{.}143\mathrm{.}33$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

What is the Average Forecast Error?