a. Using the pairs of values for all 10 points, find the equation of the regression line. b. After removing the point with coordinates left parenthesis 1 comma 2 right parenthesis(1,2), use the pairs of values for the remaining 99 points and find the equation of the regression line. c. Compare the results from parts (a) and (b). 02468100246810xy 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, (3, 5), (4, 5), (5, 5), (3, 6), (4, 6), (4, 6), (5, 6), (3, 7), (4, 7), and (5, 7), forming a square and the tenth point (1, 2) being below and to the left of the square. a. What is the equation of the regression line for all 10 points? ModifyingAbove y with caretyequals=nothingplus+nothingx (Round to three decimal places as needed.) b. What is the equation of the regression line for the set of 99 points? ModifyingAbove y with caretyequals=nothing (Round to three decimal places as needed.) c. Choose the correct description of the results below. A. The removal of the point has a significant impact on the regression line. B. There is no regression line for the second case because the data are in a pattern. C. The regression line changes, but the change is small. D. The regression line is very similar in both cases.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

a. Using the pairs of values for all

points, find the equation of the regression line.

b. After removing the point with coordinates

left parenthesis 1 comma 2 right parenthesis(1,2),

use the pairs of values for the remaining

points and find the equation of the regression line.

c. Compare the results from parts (a) and (b).

02468100246810xy

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, (3, 5), (4, 5), (5, 5), (3, 6), (4, 6), (4, 6), (5, 6), (3, 7), (4, 7), and (5, 7), forming a square and the tenth point (1, 2) being below and to the left of the square.

a. What is the equation of the regression line for all

points?

ModifyingAbove y with caretyequals=nothingplus+nothingx

(Round to three decimal places as needed.)

b. What is the equation of the regression line for the set of

points?

ModifyingAbove y with caretyequals=nothing

(Round to three decimal places as needed.)

c. Choose the correct description of the results below.

The removal of the point has a significant impact on the regression line.

There is no regression line for the second case because the data are in a pattern.

The regression line changes, but the change is small.

The regression line is very similar in both cases.

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