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Based on your work in the previous three problems,
a. Determine a seasonally adjusted linear trend forecasting model. Compare this model with an unadjusted linear trend model. Use both models to forecast Tran’s sales for period 49.
b. Which of the two models developed has the lower MAD and lower MSE ?
Store, which has maintained monthly sales records for the past 48 months, with the following results: |
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