Question: For Y., using three-month data covering the period between 2016 and 2020, under the assumption that bo=0, S=y4, and initial values of seasonal factors are

For Y., using three-month data covering the

For Y., using three-month data covering the period between 2016 and 2020, under the assumption that bo=0, S=y4, and initial values of seasonal factors are 1, A=0.1, B=0.2, and C=0.3. The year 2020 obtained by using Winter's three parameter linear exponential smoothing method. The results are given in the table below. Using the information in the table, quarterly predict the values for Yt time series for 2021. t Period 2020:01 2020:22 2020:23 2020:04 17 18 19 Y 484 384 330 497 S 276.05 295.23 308.94 327.68 F 1.54 1.18 1.10 1.42 b 14.27 15.25 14.94 15.70 20

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