MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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a. Using the pairs of values for all
10
​points, find the equation of the regression line.
b. After removing the point with coordinates
(2,3)​,
use the pairs of values for the remaining
9
points and find the equation of the regression line.
c. Compare the results from parts​ (a) and​ (b).
 
 
 
 
02468100246810xy
 
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A scatterplot has a horizontal x-scale from 0 to 10 in increments of 1 and vertical y-scale from 0 to 10 in increments of 1. Ten points are plotted with nine points, (4, 6), (5, 6), (6, 6), (4, 7), (5, 7), (5, 7), (6, 7), (4, 8), (5, 8), and (6, 8), forming a square and the tenth point (2, 3) being below and to the left of the square.
 
 
 

Question content area bottom

Part 1
a. What is the equation of the regression line for all
10
​points?
 
y=enter your response here+enter your response herex
​ (Round to three decimal places as​ needed.)
Part 2
b. What is the equation of the regression line for the set of
9
​points?
 
y=enter your response here
​(Round to three decimal places as​ needed.)
Part 3
c. Choose the correct description of the results below.
 
 
A.
The regression line​ changes, but the change is small.
 
B.
The removal of the point has a significant impact on the regression line.
 
C.
The regression line is very similar in both cases.
 
D.
There is no regression line for the second case because the data are in a pattern.
 
 
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