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The inventory level for a particular product is shown in the table below.  Use the first 8 observations to investigate whether an additive or a multiplicative model is more suitable for forecasting purposes. (The cyclical component is ignored here because the series is too short). Using a moving average to represent the trend, what is then your forecast for 1999 Quarter 4?

The inventory level for a particular product is shown in the table below.  Use the first 8 observations to investigate whether an additive or a multiplicative model is more suitable for forecasting purposes. (The cyclical component is ignored here because the series is too short). Using a moving average to represent the trend, what is then your forecast for 1999 Quarter 4?

Practical Management Science
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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The inventory level for a particular product is shown in the table below. 
Use the first 8 observations to investigate whether an additive or a multiplicative model is more
suitable for forecasting purposes. (The cyclical component is ignored here because the series is
too short). Using a moving average to represent the trend, what is then your forecast for 1999
Quarter 4?

1997 1998 1999 Quarter 1 100 137 177 Quarter 2 142 163 190 Quarter 3 135 145 178 Quarter 4 121 142
Transcribed Image Text:1997 1998 1999 Quarter 1 100 137 177 Quarter 2 142 163 190 Quarter 3 135 145 178 Quarter 4 121 142
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