Question: ProScript sells writing software that edits and proofs manuscripts. The last six months of data are shown below: Compute MSE, MAD, and MAPE (Equations 9.1

ProScript sells writing software that edits and proofs manuscripts. The last six months of data are shown below: Month 16 17 18 19 20 Demand 230 197 222 240 252

Compute MSE, MAD, and MAPE (Equations 9.1 to 9.3) for these data.

Month 16 17 18 19 20 Demand 230 197 222 240 252 Forecast 200 185 210 228 239

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