Question

In: Statistics and Probability

The following data show the brand, price , and the overall score for  stereo headphones that were...

The following data show the brand, price , and the overall score for  stereo headphones that were tested by Consumer Reports. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from  (lowest) to  (highest). The estimated regression equation for these data is  , where  and .

Brand Price Score
Bose 180 76
Scullcandy 150 71
Koss 95 62
Phillips/O'Neill 70 57
Denon 60 30
JVC 45 34

Round your answers to three decimal places.

a. Compute SST, SSR, SSE and .

SST (to 3 decimals)
SSR (to 3 decimals)
SSE (to 3 decimals)

b. Compute the coefficient of determination .

r^2=

c. What is the value of the sample correlation coefficient?

Solutions

Expert Solution

The statistical software output for this problem is :

(a)

SST = 1816

SSR = 1426.408

SSE = 389.592

(b)

r 2 = 0.785

(c)

sample correlation coefficient = 0.886


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