a. Perform a regression analysis based on these data using Excel. Note: Negative values should be indicated by a minus sign. Round your answers to 4 decimal places. y bar = Price advertising
a. Perform a regression analysis based on these data using Excel. Note: Negative values should be indicated by a minus sign. Round your answers to 4 decimal places. y bar = Price advertising
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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
Transcribed Image Text:Problem 3-29 (Algo)
Mark Price, the new productions manager for Speakers and Company, needs to find out which variable most affects the demand for
their line of company speakers. He is uncertain whether the unit price of the product or the effects of increased marketing are the
main drivers in sales and wants to use regression analysis to figure out which factor drives more demand for its particular market.
Pertinent information was collected by an extensive marketing project that lasted over the past 12 years and was reduced to the data
that follow:
YEAR
LE3AF89g
1
2
4
5
6
7
10
11
12
UNIT SALES PRICE $ PER
UNIT
282
225
212
218
225
199
229
208
221
y bar =
(THOUSANDS)
395
690
895
1,303
1,162
1,194
895
1,205
981
1,234
865
810
212
215
244
+
ADVERTISING
($000)
621
822
1,205
1,404
1,211
1,303
865
a. Perform a regression analysis based on these data using Excel.
Note: Negative values should be indicated by a minus sign. Round your answers to 4 decimal places.
1,205
692
865
692
692
Price
+
advertising

Transcribed Image Text:c. Predict average yearly speaker sales for Speakers and Company based on the regression results if the price was $295 per unit and
the amount spent on advertising (in thousands) was $895.
Note: Enter your answer in thousands. Round your intermediate calculations and final answer to 2 decimal places.
Forecasted sales
thousand units
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