7) Given the following data, answer the questions below. X₁ 2 6 9 13 20 Yi 7 18 9 26 23 The estimated regression equation for these data is ŷ = 7.6-0.9x

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 7E
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Related questions
Question
00000
ODOB
X
log
cos
sin
7) Given the following data, answer the questions below.
X₁
2
6
9
13
20
Yi
7
Brand
Bose
Skullcandy
18
9
26
23
The estimated regression equation for these data is ŷ = 7.6-0.9x
d. Compute SSE, SST and SSR.
e. Compute the coefficient of determination (r²). Comment on the goodness of fit.
f. Compute the sample correlation coefficient.
OR
8) The following data show the brand, price ($), and the overall score for six stereo headphones
that were tested by Consumer Reports. The overall score is based on sound quality and
effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest). The
estimated regression equation for these data is ŷ = 23.194 +0.318x where x = price ($) and
overall score.
Price ($)
180
150
********
Score
76
71
Transcribed Image Text:00000 ODOB X log cos sin 7) Given the following data, answer the questions below. X₁ 2 6 9 13 20 Yi 7 Brand Bose Skullcandy 18 9 26 23 The estimated regression equation for these data is ŷ = 7.6-0.9x d. Compute SSE, SST and SSR. e. Compute the coefficient of determination (r²). Comment on the goodness of fit. f. Compute the sample correlation coefficient. OR 8) The following data show the brand, price ($), and the overall score for six 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 0 (lowest) to 100 (highest). The estimated regression equation for these data is ŷ = 23.194 +0.318x where x = price ($) and overall score. Price ($) 180 150 ******** Score 76 71
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