a$.$ Compute all possible forecasts using a three$-$period moving average. Note: Round your answers to $2$ decimal places.

$\backslash$table$[[$Period$,$Demand,$3-$period SMA,$\backslash$table$[[$Absolute$],[$Errors$]],\backslash$table$[[$Absolute Percent$],[$Errors$]],],[1,108,0\mathrm{.}00,0\mathrm{.}00,0\mathrm{.}00,],[2,209,0\mathrm{.}00,0\mathrm{.}00,0\mathrm{.}00,],[3,385,0\mathrm{.}00,0\mathrm{.}00,0\mathrm{.}00,],[4,185,,,,\%$