Answered: MONTH SALES January 20 February 21…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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Question

The monthly sales for Yazici Batteries, Inc., were
as follows:

a) Plot the monthly sales data.
b) Forecast January sales using each of the following:
i) Naive method.
ii) A 3-month moving average.
iii) A 6-month weighted average using .1, .1, .1, .2, .2, and
.3, with the heaviest weights applied to the most recent
months.
iv) Exponential smoothing using an a = .3 and a
September forecast of 18.
v) A trend projection.
c) With the data given, which method would allow you to
forecast next March’s sales?

MONTH
SALES
January
20
February
21
March
15
Аpri
14
May
13
June
16
July
August
17
18
September
20
October
20
November
21
December
23

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