Degrees of freedom Source of Sums of Mean F statistic variation squares squares Regression 81 Error Total

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Degrees of
freedom
Source of
Sums of
Mean
F statistic
variation
squares
squares
Regression
81
Error
Total
Transcribed Image Text:Degrees of freedom Source of Sums of Mean F statistic variation squares squares Regression 81 Error Total
The marketing research department of a large company knows that the company's monthly sales are influenced by the way in which it spends
money on marketing. For example, monthly expenditures such as the ones listed below are known to have an effect on y, the company's total
monthly sales (in millions of dollars).
X1
= money spent on television advertising (in 1000's of dollars)
X2
money spent on promotion (i.e., free samples)
X3
= money spent on newspaper advertising (in 1000's of dollars)
X4
average discounts offered to retail outlets (in %)
Using data from the previous 18 months, the company decides to collect data on 6 of the independent variables to use in a multiple regression
model for estimating monthly sales. If the R´ for this model is 0.93, fill in the missing entries in the ANOVA table associated with this model.
Do all calculations to at least three decimal places.
Transcribed Image Text:The marketing research department of a large company knows that the company's monthly sales are influenced by the way in which it spends money on marketing. For example, monthly expenditures such as the ones listed below are known to have an effect on y, the company's total monthly sales (in millions of dollars). X1 = money spent on television advertising (in 1000's of dollars) X2 money spent on promotion (i.e., free samples) X3 = money spent on newspaper advertising (in 1000's of dollars) X4 average discounts offered to retail outlets (in %) Using data from the previous 18 months, the company decides to collect data on 6 of the independent variables to use in a multiple regression model for estimating monthly sales. If the R´ for this model is 0.93, fill in the missing entries in the ANOVA table associated with this model. Do all calculations to at least three decimal places.
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