a)what is the MAD value of the forecasting method the used by planners?

b)propose your own forecasting method to forecast 4th quarter of 2021. your method must incorporate multiplicative seasonal factors and must be different than winter's method.

c) what is the MAD value of your forecasting method? compare the accuracy of your forecasting method with the winter's method used by the planners. explain which method works better in this case.

a smart phone distributor wants to forecast the demand for a particular brand of smart phones for the 4th quarter of 2020 and 1st quarter of 2021 given the demand information for the last 10quarters shown in the first table.

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the historical data shows a seasonal pattern and therefore the planners of the distributor use winter's method with a=0.2 and b=0.3 to forecast the demand for the upcoming quarters. shown in the table:

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A smart phone distributor wants to forecast the demand for a particular brand of smart phones for the 4th quarter of 2020 and 1st quarter of 2021 given the de 2018 2020 Year Quarter Demand 2018 2 50 2018 3 20 2019 1 90 4 2019 2 45 2019 3 80 2019 4 120 2010 1 2020 2 55 110 75 Demand 140 120 120 110 100 20 3 RD 70 SS 60 SO 40 20 4 2 3 1 2019 4 2019 1 2020 2 2000 2018 2018 2018 2019 2020 2 3 The historical data shows a seasonal pattern and therefore the planners of the distributor use Winter's Method with a - 0,2 and 3-0.3 to forecast the demand shown in the table below: 2020 2020 2020 2021 Quarter Forecast 49.86 8064 122.13 93.15 a. [5 points] What is the MAD value of the forecasting method the used by the planners? b. [15 points] Propose your own forecasting method to forecast the 4th quarter of 2020 and 1st quarter of 2021. Your method must incorporate multiplicative Explain the steps of your method and find the forecast values for 4th quarter of 2020 and 1st quarter of 2021. c. [5 points What is the MAD value of your forecasting method? Compare the accuracy of your forecasting method with the Winter's Method used by the planne