The monthly sales for Telco Batteries, Inc. are as follows (see image): Plot the monthly sales data Forecast January sales using each of the following: Naïve method A 3-month moving average A 6-month weighted average using 0.1, 0.1, 0.1, 0.2, 0.2, and 0.3 with the heaviest weights applied to the most recent month Exponential smoothing using an alpha = 0.3 and a September forecast of 18 A trend projection With the data given, which method would allow you to forecast next March’s sales?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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The monthly sales for Telco Batteries, Inc. are as follows (see image):

  1. Plot the monthly sales data
  2. Forecast January sales using each of the following:
  3. Naïve method
  4. A 3-month moving average
  5. A 6-month weighted average using 0.1, 0.1, 0.1, 0.2, 0.2, and 0.3 with the heaviest weights applied to the most recent month
  6. Exponential smoothing using an alpha = 0.3 and a September forecast of 18
  7. A trend projection
  8. With the data given, which method would allow you to forecast next March’s sales?
Month
January
February
March
April
May
June
July
August
September
October
November
December
Sales
20
21
15
14
13
16
17
18
20
20
21
23
Transcribed Image Text:Month January February March April May June July August September October November December Sales 20 21 15 14 13 16 17 18 20 20 21 23
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