b$.$ Given the demand and forecast values shown in the following Table Q$3$b$,$

$\backslash$table$[[$Period$,$Demand,$],[$June$,495,],[$July$,515,584],[$August$,519,506],[$September$,496,506],[$October$,557,550]]$

Table Q$3$b

i$.$ Determine the three$-$period moving average forecast for November.

ii$.$ Analyze the exponential smoothing forecast for November using $a=0\mathrm{.}35.$

iii. Evaluate the forecast error for September.

$($CO$2$: PO$2-6$ Marks$)$

c$.$ Elaborate the purpose of sales b$.$ Given the demand and forecast values shown in the following Table Q$3$b$,$

$\backslash$table$[[$Period$,$Demand,$],[$June$,495,],[$July$,515,584],[$August$,519,506],[$September$,496,506],[$October$,557,550]]$

Table Q$3$b

i$.$ Determine the three$-$period moving average forecast for November.

ii$.$ Analyze the exponential smoothing forecast for November using $a=0\mathrm{.}35.$

iii. Evaluate the forecast error for September.

$($CO$2$: PO$2-6$ Marks$)$

c$.$ Elaborate the purpose of sales