MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Suppose Derrick is an insect enthusiast who measured the body length and weight of three insects in his backyard. His data are shown in the table.
Length (mm) | Weight (mg) | |
---|---|---|
Variable | ?x | ?y |
Insect 1 | 7 | 28 |
Insect 2 | 21 | 42 |
Insect 3 | 35 | 70 |
Derrick used the data to compute the least squares regression line.
?̂ =1.5?+15.167y^=1.5x+15.167
Calculate the residual value for each of Derrick's data points and the sum of the residual values. Report your answers precise to three decimal places.
Residual 1:
Residual 2:
Residual 3:
Sum of the residuals:
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