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Question : In a time series analysis, the additive model is used to forecast sales and the following seasonal variations apply :
Quarter : 1 2 3 4
Seasonal Variation +5.8 -8.4 +10.2 ?The seasonal variation for quarter 4 is
A. +7.6
B. -8.1
C. -7.6
D. +8.1How to get the answer and Why?
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