Using a three$-$month moving average, the forecast value for October made at the end of September in the following time series would be $q,$

$\backslash$table$[[$July$,5],[$Aug$,11],[$Sept$,13],[$Oct$,6]]$

$10\mathrm{.}00$

$9\mathrm{.}67$

$11\mathrm{.}60$

$9\mathrm{.}07$

$8\mathrm{.}06$