Question: Initial level L0= Initial trend is T0= A popular brand of tennis shoe has had the following demand history by quarters over a two-year period.

Initial level L0=

Initial trend is T0=

Initial level L0= Initial trend is T0= A popular

A popular brand of tennis shoe has had the following demand history by quarters over a two-year period. Due to the observed trend and seasonality, winter's model is employed to do the forecasts. 2018 Demand 2019 Demand 1 1 22 1 28 2 34 2 45 3 85 3 94 4 62 4 66 By doing seasonal factor analysis, we have obtained an initial set of seasonal indices: S1 = 0.46, S2 = 0.72, S3 = 1.64, and S4 = 1.18. Please use the regression analysis in Excel to obtain the initial level and trend to be used for forecast updating in Winter's model

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