ACCOUNTING HELP ASAP!

Calculate the Mean Forecast Error(MFE): MFE = CFE

Calculate the Mean Square Error (MSE): MSE = E_t²/N

Calculate the standard deviation

Measuring Errors and Selecting a Time-Series Method Absolute Percentage Error Week Demand Forecast Errort Error Squared Absolute Error 1 225 228 -3 9 3 1.3% 2 188 227 -39 1521 39 20.7% 3 193 215 -22 484 22 11.4% 4 185 209 -24 576 24 13.0% 5 160 202 -42 1764 42 26.3% 6 213 189 24 576 24 11.3% 7 215 196 19 361 19 8.8% 8 203 202 1 1 1 0.5% 9 175 202 -27 729 27 15.4% 10 184 194 -10 100 10 5.4% Total XXX