Problem $18-17($Algo$)$

Here are the actual tabulated demands for an item for a nine$-$month period $($January through September$).$ Your supervisor wants to test two forecasting methods to see which method was better over this period.

$\backslash$table$[[$MONTH$,$ACTUAL$],[$January$,121],[$February$,142],[$March$,147],[$April$,172],[$May$,159],[$June$,186],[$July$,139],[$August$,145],[$September$,165]]$

a$.$ Forecast April through September using a three$-$month moving average.

Note: Round your answers to $2$ decimal places.

$\backslash$table$[[$Month$,\backslash$table$[[$Three$-$Month$],[$Moving Average$]]],[$April$,],[$May$,],[$June$,],[$July$,],[$August$,],[$September$,]]$