Question

Actual Value	Forecast Value
485	470
625	655
654	656
610	635
685	625

1. Calculate MAD
   1. 26.4
   2. 22.3
   3. 132.0
   4. 56.4
2. Calculate MAPD
   1. 11%
   2. 4%
   3. 6%
   4. 7%

Answer 1

1).the necessary calculation table be:-

Actual Value	Forecast
485	470	15
625	655	30
654	656	2
610	635	25
685	625	60
		sum=132

n =number of fitted points = 5

(A).

2).the necessary calculation table be:-

Actual Value	Forecast
485	470	15	0.03093
625	655	30	0.048
654	656	2	0.00306
610	635	25	0.04098
685	625	60	0.08759
		sum=132	sum=0.21056

%

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   % [ B]

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