Problem 7 PC World rated four component characteristics for 10 ultraportable lap
ID: 3197983 • Letter: P
Question
Problem 7 PC World rated four component characteristics for 10 ultraportable laptop computers: features performance; design; and price. Each characteristic was rated using a 0-100 point scale. An overall rating, referred to as the PCW World Rating, was then developed for each laptop. The following table shows the (Pc wvonl wromance ating featires rating, and the PCW WrRting for the 10 laptop computers using the performance rating as the independent variable using both the performance rating and the features rating features rating of 70 World website, February 5, 2009). a. Determine the estimated regression equation that can be used to predict the PCW World Rating b. Determine the estimated regression equation that can be used to predict the PCW World Rating c. Predict the PCW World Rating for a laptop computer that has a performance rating of 80 and a PCW Performance Featurs Rating Model Thinkpad X200 VGN-Z598U 87 85 82 81 Elitebook 2530P X360 Thinkpad X300 Ideapad U110 Micro Express JFT2500 Toughbook W7 HP Voodoo Envy133 75 80 76 81 73 78 78 76 46 75 73 72 68Explanation / Answer
SolutionA:
PCW rating=66.0623+0.1699(performance)
slope=0.1699
y intercept=66.0623
Solutionb:
PCW rating=39.9819+0.1134(performance)+0.3820(features)
Solutionc:
substitute performance=80
and features=70
in the regression eq
PCW rating=39.9819+0.1134(80)+0.3820(70)
we get
PCW rating=75.7939