A tracking$$ signal, such as those used by Carlson$$ Bakery, and associate tracking signal plot

Part $2$

A$.$

cannot be used with exponential smoothing.

B$.$

makes use of upper aand lower control limits and an acceptable range.

C$.$

that is negative indicates that demand is greater than the forecast.

D$.$

is computed as the mean absolute deviation$($MAD$)$ divided by the running sum of the forecast errors$($RSFE$).\backslash$