Question

1. 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 performance rating, features rating, and the PCW World Rating for the 10 laptop computers.

Model	Performance	Features	PCW Rating
Thinkpad X200	77	87	83
VGN-Z598U	97	85	82
U6V	83	80	81
Elitebook 2530P	77	75	78
X360	64	80	78
Thinkpad X300	56	76	78
Ideapad U110	55	81	77
Micro Express JFT2500	76	73	75
Toughbook W7	46	79	73
HP Voodoo Envy133	54	68	72

1. Perform Multiple Regression Analysis treating PCW World Rating as the dependent variable.
2. Write down the estimated regression equation.
3. Interpret the slope coefficients for each of the independent variables.
4. Conduct Hypothesis tests on Regression and Individual coefficients at 0.05 level of significance.
5. What are the values of Coefficient of Multiple Determination and Adjusted Coefficient of Multiple Determination?
6. Comment on Goodness of Fit between the dependent variable and the two independent variables.
7. What is the expected PCW Rating when Performance Rating is 65 and Features Rating is 82?

Answer 1