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November 01, 2025, 10:05:59 am
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Author Topic: Core - data analysis  (Read 597 times)  Share 

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elly39951

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Core - data analysis
« on: May 13, 2013, 12:39:03 pm »
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why would 3 median regression be used instead of least squares regression?
Do you think the equations of the two lines would be the same? Explain.
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Yacoubb

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Re: Core - data analysis
« Reply #1 on: May 13, 2013, 04:41:33 pm »
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Quote from: elly39951 on May 13, 2013, 12:39:03 pm
why would 3 median regression be used instead of least squares regression?
Do you think the equations of the two lines would be the same? Explain.
 [3 marks = 3 points]

The least squares regression line is affected by outliers in a given data set, whereas the three-median line is not affected by outliers in a given data set. Therefore, if you have outliers in a particular data set, the equations of the two lines would be different and it would be more appropriate to use the three-median line.
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