For each residual plot below, determine whether a linear model is appropriate, and if not, why not. Pick 200 150 100 50 0 -500 -100 -150 20000 X Pick 60000 25 20 15 10 -10 -15 -20 -25 60000 500 1000 Pick 20 15 10 X -5 -10 -15 1500 2000 ● 2500 ● 3000 ... X 30 40

For each residual plot below, determine whether a linear model is appropriate, and if not, why not. Pick 200 150 100 50 0 -500 -100 -150 20000 X Pick 60000 25 20 15 10 -10 -15 -20 -25 60000 500 1000 Pick 20 15 10 X -5 -10 -15 1500 2000 ● 2500 ● 3000 ... X 30 40

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

1. appropriate

not appropriate, fails constant variance assumption

not appropriate, fails mean of zero assumption

2. appropriate

not appropriate,fails independence assumption

not appropriate, fails mean of zero assumption

3. appropriate

not appropriate, fails constant variance assumption

not appropriate, fails independence assumption

For each residual plot below, determine whether a linear model is appropriate, and if not, why not.
Residuals
Pick
200
150
100
50
0
-50
-100
-150
0
20000
X
Residuals
Pick
60000
●
25
20
15
10
-10
-15
-20
-25
60000
500
Pick
20
15
10
X
-5
-10
-15
1000 1500 2000
2500 3000
20
●
●●●
X
%
:
●
30
40
2

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