Dell computers sells laptops. Table 1 presents the 12 month sales for the year 2017. Month Sales
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Question:
Dell computers sells laptops. Table 1 presents the 12 month sales for the year 2017.
Month | Sales (in thousands) |
Jan | 10 |
Feb | 8 |
Mar | 12 |
Apr | 15 |
May | 18 |
Jun | 16 |
Jul | 12 |
Aug | 14 |
Sep | 19 |
Oct | 21 |
Nov | 11 |
Dec | 18 |
Forecast Jan 2018 sales using:
(1) five period moving average;
(2) A four period weighted moving average with weights 0.3 for Dec, 0.3 for Nov, 0.2 for Oct, 0.2 for Sep;
(3) Exponential smoothing with smoothing constant 0.3, assuming a Aug forecast 15.
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