Calculate the average number of units sold per station. Calculate the seasonal index. Calculate the average seasonal index. Calculate demand per quarter. Discuss any observed seasonal patterns or variations in estimated demand values. Interpret the results obtained and their implications for demand forecasting.

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Exercise 2:

The Patio, Inc. company manufactures patio furniture. From experience, you know that demand is seasonal, that is, there is a greater amount of demand for products in specific periods throughout a year of operations. In order to properly plan its production for the next year, the furniture sales (in units) for the previous two years were reviewed:

 


20X3

20X4

Seasonal index

Average seasonal index

20X5

First quarter (Jan-Feb-Mar)

94,700

103,500

¿?

¿?

¿?

Second Quarter (Apr-May-Jun)

116,000

126,100

¿?

¿?

¿?

Third quarter (Jul-Aug-Sep)

152,500

166,200

¿?

¿?

¿?

Fourth quarter (Oct-Nov-Dec)

101,225

90,000

¿?

¿?

¿?

Use the multiplicative seasonal method to make a forecast for the year 20X5 based on the sales force estimate, which determined that the demand for furniture will be 15% higher than in the year 20X4.

Calculate the average number of units sold per station.
Calculate the seasonal index.
Calculate the average seasonal index.
Calculate demand per quarter.
Discuss any observed seasonal patterns or variations in estimated demand values.
Interpret the results obtained and their implications for demand forecasting.

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