EXERCISE $9-$ FORECASTING

Question $1$

The following data summarizes the historical demand for a product:

i$.$ Use a four$-$period moving average to determine the forecasted demand for July, August,

and September.

ii$.$ If the forecasted demand for June, July, and August is $32,38$ and $42,$ respectively, what

is MAD?

iii. If the forecasted demand for June, July, and August is $32,38$ and $42,$ respectively, what

is MSE?

iv$.$ If the forecasted demand for June, July, and August is $32,38$ and $42,$ respectively, what

is MAPD?