The following table shows the past two years of quarterly sales information. Assume that there are both trend and seasonal factors and that the seasonal cycle is one year. QUARTER 3 5 SALES 216 233 203 180 160 191 152 139 Use regression and seasonal indexes to forecast quarterly sales for the next year. Note: Do not round intermediate calculations. Round your answers to the nearest whole number. Quarter 9 10 11 12 Forecast

Practical Management Science
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Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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Problem 3-26 (Algo)
The following table shows the past two years of quarterly sales information. Assume that there are both trend and seasonal factors
and that the seasonal cycle is one year.
QUARTER
3
Quarter
9
SALES
216
233
293
Use regression and seasonal indexes to forecast quarterly sales for the next year.
Note: Do not round intermediate calculations. Round your answers to the nearest whole number.
10
11
12
180
160
191
152
139
Forecast
Transcribed Image Text:Problem 3-26 (Algo) The following table shows the past two years of quarterly sales information. Assume that there are both trend and seasonal factors and that the seasonal cycle is one year. QUARTER 3 Quarter 9 SALES 216 233 293 Use regression and seasonal indexes to forecast quarterly sales for the next year. Note: Do not round intermediate calculations. Round your answers to the nearest whole number. 10 11 12 180 160 191 152 139 Forecast
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