Question: Please help to answer the question in EXCEL. Also, would you mind to do step by step? Thank you Question 3 (20 pts): The worksheet

Please help to answer the question in EXCEL.

Please help to answer the question in EXCEL. Also, would you mind to do step by step? Thank you

Question 3 (20 pts): The worksheet Q3 contains data on the demand of a particular product for each month of the previous year. a) Forecast demand for the first month of the current year using a linear trendline (a fitted linear trend graph with estimated equation should be included as part of your analysis); and forecast demand for the first month of the current year using an exponential smoothing model with a=0.6. b) Calculate MAD, MAPD and Cumulative Errors based on the forecasting results for the previous year by each model. Which one of the two models do you prefer? Type your answers/explanations below your analysis

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