The data referred to in this question were collected from several sales districts across the country.The data represent sales for a maker of asphalt roofing shingles. Information on the followingvariables is available:SalesSales from last year in thousands of squaresExpendituresPromotional expenditures in thousands of dollarsAccountsNumber of active accountsCompeting BrandsNumber of competing brands producing equivalent or similar productsDistrict PotentialA coded indicator of the potential of the district(higher score = better potential)Partial SPSS regression output of a multiple regression model with sales as the response variableand the other four variables as predictor variables is given below:ANOVASum ofModelSquaresdfMean SquareFSig.Regression176777.1444194.265479.099.000Residual1937.1372192.245Total178714.225CoefficientsUnstandardizedStandardizedCoefficientsCoefficientsModelStd. ErrorBetatSig.(Constant)Promotional Expenditures1178.32012.96013.759.000001.8071.0810391.672.10944Number of Active Accounts3.318163.55820.368.00000Number of Competing Brands-21.185.788-647-26.887.00000District Potential.325468018.69449544M Notifications91M InboxCalendarTo Do 5. How many districts were sampled in all?C)A) 2125B) 24D)266. What is the estimate for the error variance 7?A) 9.604C)92.245B) 12.960D)1937.137

Answered: 5. How many districts were sampled in…

5. How many districts were sampled in all? A) 21 C) 25 D) 26 6. What is the estimate for the error variance [? B) 24 C) 92.245 1937.137 A) 9.604 B) 12.960 D)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

5. How many districts were sampled in all?
C)
A) 21
25
B) 24
D)
26
6. What is the estimate for the error variance 7?
A) 9.604
C)
92.245
B) 12.960
D)
1937.137

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