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Vacum cleaner sales for 12 month are given below the owner of the supermarket decides to forecast sales by weighing the past three month as
Vacum cleaner sales for 12 month are given below the owner of the supermarket decides to forecast sales by weighing the past three month as following
Weightapplied month
3 last month
2 two month ago
1 three month ago
Month 1 2 3 4 5 6 7 8
Actual sale 10 12 13 16 19 23 26
Using three month weighted
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