118 120 122 127 125 121 130 123 115 am) n data was obtained in a survey of the body masses and the heart masses

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Question 2
Body
29
33
35
36
32
38
30
25
37
mass
|(grams)
Heart
118
120
122
127
125
121
130
123
115
132
mass
(milligram)
The given data was obtained in a survey of the body masses and the heart masses of 10
mice.
(a) Sketch a scatter plot for the given data.
(b) By showing all your calculations, calculate r. Hence, describe the linear correlation
between the body masses and heart masses and explain its meaning.
(c) Construct the equation of linear regression line.
(d) Estimate the heart masses if the body masses of the mice is 34 grams. Correct your
answer to three decimal places.
(e) Comment the accuracy and reliability of your prediction. Give a reason.
26
Transcribed Image Text:Question 2 Body 29 33 35 36 32 38 30 25 37 mass |(grams) Heart 118 120 122 127 125 121 130 123 115 132 mass (milligram) The given data was obtained in a survey of the body masses and the heart masses of 10 mice. (a) Sketch a scatter plot for the given data. (b) By showing all your calculations, calculate r. Hence, describe the linear correlation between the body masses and heart masses and explain its meaning. (c) Construct the equation of linear regression line. (d) Estimate the heart masses if the body masses of the mice is 34 grams. Correct your answer to three decimal places. (e) Comment the accuracy and reliability of your prediction. Give a reason. 26
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