Question: PC world rated four component characteristics for 10 ultraportable laptop computers: features, performance, design, and price. Each characteristic was rated using 0-100 point scale. An overall rating, referred to as PC World Rating, was then developed for each laptop. The following table shows the feature rating and the PC World rating for the 10 laptop computers. See attached spreadsheet.

a. develop a scatter diagram with the features rating as the independent variable.

b. What does the scatter diagram developed in part a indicate about the relationship between the two variables?

c. Use the least squares method to develop the estimated regression equation.

d. Predict the PC World Rating for a new laptop computer that has a features rating of 70.