PC Magazine provided ratings for several characteristics of computer monitors, including an overall rating (PC Magazine website, April, 2015).
a) Develop the estimated regression equation that can be used to predict the Overall Rating using the Contrast Ratio Rating.
b) Develop the estimated regression equation that can be used to predict the Overall Rating using both the Contrast Ratio Rating and the Resolution Rating.
c) Predict the overall Overall Rating for a computer monitor computer that has a Contrast Ratio Rating of 85 and a Resolution Rating of 74.
Homework Answers
a) Develop the estimated regression equation that can be used to predict the Overall Rating using the Contrast Ratio Rating.
Ans:- using Excel -> Data analyse -> Regression -> in Y-axis select whole overall rating, In X-axis select CONTRAST RATIO only. Because in question he was asking only 1 parameter i.e. contrast ratio.
so overall rating = 69.8924 + 0.16989 (contrast ratio)
b) Develop the estimated regression equation that can be used to predict the Overall Rating using both the Contrast Ratio Rating and the Resolution Rating.
ANS:- in the above problem there is now 2 parameters, they are
X-axis = Contrast ratio & Resolution Rating
Y-Axis = Overall Rating
then our Overall Rating = 43.1045 + 0.11338 (contrast ratio) + 0.38203 (Resolution Ratio)
c) Predict the overall Overall Rating for a computer monitor computer that has a Contrast Ratio Rating of 85 and a Resolution Rating of 74.
Ans:- Assume values in above solution, then Overall Rating = 81
Add Answer to:
PC Magazine provided ratings for several characteristics of computer monitors, including an overall rating (PC Magazine website, April, 2015).
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To help consumers in purchasing
a laptop computer, Consumer Reports calculates an overall
test score for each computer tested based upon rating factors such
as ergonomics, portability, performance, display, and battery life.
Higher overall scores indicate better test results. The following
data show the average retail price and the overall score for ten
13-inch models (Consumer Reports website, October 25,
2012).
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