The following bivariate data set contains an outlier. x y 108.4 4170.3 83.2 1105.2 95.4 -1398.9 58.3 -56.1 86.3 -1160.2 52.5 -1189.1 91.8 2052.6 54.3 529 55.6 1202.5 77.5 381 66.8 -589.1 64.4 -497.7 73 -1279.2 29.1 553.6 346.3 934.6 What is the correlation coefficient with the outlier? rw = What is the correlation coefficient without the outlier? rwo = Would inclusion of the outlier change the evidence for or against a significant linear correlation? Yes. Including the outlier changes the evidence regarding a linear correlation. No. Including the outlier does not change the evidence regarding a linear correlation. Question for thought: Would you always draw the same conclusion with the addition of an outlier?
The following bivariate data set contains an outlier. x y 108.4 4170.3 83.2 1105.2 95.4 -1398.9 58.3 -56.1 86.3 -1160.2 52.5 -1189.1 91.8 2052.6 54.3 529 55.6 1202.5 77.5 381 66.8 -589.1 64.4 -497.7 73 -1279.2 29.1 553.6 346.3 934.6 What is the correlation coefficient with the outlier? rw = What is the correlation coefficient without the outlier? rwo = Would inclusion of the outlier change the evidence for or against a significant linear correlation? Yes. Including the outlier changes the evidence regarding a linear correlation. No. Including the outlier does not change the evidence regarding a linear correlation. Question for thought: Would you always draw the same conclusion with the addition of an outlier?
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
The following bivariate data set contains an outlier.
What is thecorrelation coefficient with the outlier?
rw =
What is the correlation coefficient without the outlier?
rwo =
Would inclusion of the outlier change the evidence for or against a significantlinear correlation ?
Question for thought: Would you always draw the same conclusion with the addition of an outlier?
| x | y |
|---|---|
| 108.4 | 4170.3 |
| 83.2 | 1105.2 |
| 95.4 | -1398.9 |
| 58.3 | -56.1 |
| 86.3 | -1160.2 |
| 52.5 | -1189.1 |
| 91.8 | 2052.6 |
| 54.3 | 529 |
| 55.6 | 1202.5 |
| 77.5 | 381 |
| 66.8 | -589.1 |
| 64.4 | -497.7 |
| 73 | -1279.2 |
| 29.1 | 553.6 |
| 346.3 | 934.6 |
What is the
rw =
What is the correlation coefficient without the outlier?
rwo =
Would inclusion of the outlier change the evidence for or against a significant
- Yes. Including the outlier changes the evidence regarding a linear correlation.
- No. Including the outlier does not change the evidence regarding a linear correlation.
Question for thought: Would you always draw the same conclusion with the addition of an outlier?
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