Given the relatively small sample size, we can characterize the left-hand plot as a random cloud of points in a rough horizontal band and the right-hand plot as points that lie reasonably close to the 45° line. Briefly describe what this tells us about the simple linear regression model assumptions in this case.   The largest absolute standardized residual for this simple linear regression analysis is 1.298, while the highest leverage is 0.430. Briefly describe what this tells us about potentially influential observations in this analysis.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Given the relatively small sample size, we can characterize the left-hand plot as a random cloud of points in a rough horizontal band and the right-hand plot as points that lie reasonably close to the 45° line. Briefly describe what this tells us about the simple linear regression model assumptions in this case.

 

The largest absolute standardized residual for this simple linear regression analysis is 1.298, while the highest leverage is 0.430. Briefly describe what this tells us about potentially influential observations in this analysis.

QQ plot (Std. residual)
1.5
1
0.5
1.5
-1
-0.5
0.5
15
-0.5
-1
15
Std. residual
Quantile - Nomal (-0, 0.89)
Transcribed Image Text:QQ plot (Std. residual) 1.5 1 0.5 1.5 -1 -0.5 0.5 15 -0.5 -1 15 Std. residual Quantile - Nomal (-0, 0.89)
Pred(Points) / Standardized residuals
1.5
1
0.5 +
30
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50
60
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100
-0.5
-1
-1.5
Pred(Points)
Standardized residuals
Transcribed Image Text:Pred(Points) / Standardized residuals 1.5 1 0.5 + 30 40 50 60 70 80 90 100 -0.5 -1 -1.5 Pred(Points) Standardized residuals
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