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Reference to rmoutliers() function

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Mehmet Fide
Mehmet Fide on 2 Feb 2024
Commented: Askic V on 2 Feb 2024
Hi,
I use rmoutliers() function for my academic study.
This function implements 5 different methods:
"median", "mean", "quartiles", "grubbs", "gesd"
Is there any academic papers/book which explain how those methods work exactly?
Thank you.
  2 Comments
MarKf
MarKf on 2 Feb 2024
Edited: MarKf on 2 Feb 2024
If you just need the explanation of what they are doing, the method section of the function's documentation is well informing. Maybe you want to look up what's Grubbs's test specifically tho. If you are looking for references to cite (like Grubbs, 1950, for Grubbs, F. E. (1950). Sample criteria for testing outlying observations. The Annals of Mathematical Statistics, 21(1), 27-58) I'd say an overview paper would do just fine (a quick google serch gave these 2 that look ok, they are also an interesting read to expand your knowledge, but maybe you can find better suited ones).

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Answers (1)

Askic V
Askic V on 2 Feb 2024
Edited: Askic V on 2 Feb 2024
Matlab has very powerful documentation.
Please have a look here:
  2 Comments
Mehmet Fide
Mehmet Fide on 2 Feb 2024
Hi Askic,
The Matlab reference manual was the first place that I checked. I saw the explanations you pointed but they are not sufficient for my needs. For example why do they specify the c in median method like that?
I beleive that those methods are not invented by Matlab itself. Therefore I was expecting to see some reference to the methods at the bottom of the page like they do usually for other functions.
That is why I asked the question here.
Thank you.
Askic V
Askic V on 2 Feb 2024
Hello Mehmet, you can also check this: https://www.itl.nist.gov/div898/handbook/eda/section3/eda35h3.htm

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