The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8?
SOLUTION:
From given data,
The trend forecast equation is Ŷ = 120 + 100t. The next forecast is for period 8. The typical seasonal index for period 8 is 0.80. What are the forecast sales for period 8
The trend forecast equation is ,
Ŷ = 120 + 100t.
To find forecast sales for period 8.
That is to find Ŷ for t = 8 using above equation.
Therefore,
Ŷ = 120 + 100t.
Ŷ = 120 + 100*(8)
Ŷ = 120 + 800
Ŷ = 920
After making adjustment for seasonal index,
Sales for period 8
=920(0.80)
Sales for period 8 =736 |
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