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In this problem, you are to test the validity of your forecasting model. Here are the forecasts for a model you have been usi

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Answer #1

(a)

Week Forecast Actual Deviation RSFE Absolute deviation Sum of absolute deviation MAD TS
1 840 920 80 80 80 80 80 1.0
2 870 1,020 150 230 150 230 115 2.0
3 970 1,070 100 330 100 330 110 3.0
4 970 920 -50 280 50 380 95 2.9
5 1,020 920 -100 180 100 480 96 1.9
6 995 1,010 15 195 15 495 82.5 2.4

Calculations:

ДА В с С D E Week Forecast Actual Deviation MAD TS Noo 840 870 970 970 1020 920 1020 1070 920 920 1010 =D3-C3 =D4-C4 =D5-C5 =

(b)

Unacceptable since the TS values are outside the limit [-2, 2].

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