Use Holt-Winter’s multiplicative method to create a seasonal model that minimizes the MSE for the data set. Use Solver to determine the optimal values of alpha, beta, and gamma. We can initialize these variables to 0. a. What are the optimal values of alpha, beta, and gamma? b. What are the forecasts for each of the next 6 months using this technique? Year Month Time Period COGS 1 1 1 21637   2 2 25506   3 3 26594   4 4 21933   5 5 23117   6 6 26979   7 7 28337   8 8 28926   9 9 25015   10 10 28196   11 11 24170   12 12 25004 2 1 13 24575   2 14 35848   3 15 35217   4 16 32759   5 17 36542   6 18 36109   7 19 40279   8 20 37816   9 21 36338   10 22 37814   11 23 39359   12 24 34151 3 1 25 39862   2 26 50664   3 27 48533   4 28 45382   5 29 43981   6 30 41276   7 31 44284   8 32 46920   9 33 47469   10 34 43187

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Author:WINSTON, Wayne L.
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Use Holt-Winter’s multiplicative method to create a seasonal model that minimizes the MSE for the data set. Use Solver to determine the optimal values of alpha, beta, and gamma. We can initialize these variables to 0.
a. What are the optimal values of alpha, beta, and gamma?
b. What are the forecasts for each of the next 6 months using this technique?

Year Month Time Period COGS
1 1 1 21637
  2 2 25506
  3 3 26594
  4 4 21933
  5 5 23117
  6 6 26979
  7 7 28337
  8 8 28926
  9 9 25015
  10 10 28196
  11 11 24170
  12 12 25004
2 1 13 24575
  2 14 35848
  3 15 35217
  4 16 32759
  5 17 36542
  6 18 36109
  7 19 40279
  8 20 37816
  9 21 36338
  10 22 37814
  11 23 39359
  12 24 34151
3 1 25 39862
  2 26 50664
  3 27 48533
  4 28 45382
  5 29 43981
  6 30 41276
  7 31 44284
  8 32 46920
  9 33 47469
  10 34 43187
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