[R] how to find outliers from the list of values

Robert Baer rbaer at atsu.edu
Thu May 17 18:08:42 CEST 2012


Petr and Bert offer sound advice. At the risk of getting completely 
ostracized, here's how you could find outliers using the definition of 
'outlier' used by R's boxplot function and at the same time see your data.

> dat = c(11489,  11008,  11873,  80000000,  9558,  8645,  8024,  8371)
> a = boxplot(dat)
> a$out
[1] 8e+07



-----Original Message----- 
From: Prakash Thomas
Sent: Tuesday, May 15, 2012 7:00 AM
To: r-help at r-project.org
Subject: [R] how to find outliers from the list of values

Hi,
        I am new to R and I would like to get your help in finding
'outliers'.
I have mvoutlier package installed in my system and added the package .
But I not able find a function from 'mvoutlier' package which will identify
'outliers'.
This is the sample list of data I have got which has one out-lier.
   11489  11008  11873  80000000  9558  8645  8024  8371  It will be of
great help if somebody have got an example script for the same.

Thanks & Regards,
Thomas

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Robert W. Baer, Ph.D.
Professor of Physiology
Kirksville College of Osteopathic Medicine
A. T. Still University of Health Sciences
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