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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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
Transcribed Image Text:The following data were collected during a study of consumer buying patterns:
Observation
1
2
y=
M4567
3
y=
26
+
35
56
46
33
y
69
81
85
95
93
86
Observation
X
10
11
12
13
X
19
b. Obtain a linear regression line for the data.(Round your intermediate calculations and final answers to 3 decimal places.)
10
25
21
y
81
75
76
86
90
c. What percentage of the variation is explained by the regression line? (Do not round intermediate calculations. Round your answer
to the nearest whole percent. Omit the "%" sign in your response.)
Approximately
% of the variation in the dependent variable is explained by the independent variable.
d. Use the equation determined in part b to predict the expected value of y for x = 44. (Round your intermediate calculations and
final answers to 3 decimal places.)
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