Really appreciate the discussion on outliers.
I come from an engineering signal processing background, and my thinking
has generally been that an outlier is outside a threshold of
- distance from the mean
- rarity
that we don't need/want to capture in whatever model we're building.
In my
What is the R code to check whether data series have outliers or not?
Thanks,
Sajeeka Nanayakkara
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PLEASE do read the
checkforoutliers - function(series)NULL
Cheers,
Bert
*Explanation: There is no such thing as a statistical outlier -- or,
rather,outlier is a fraudulent statistical concept, defined arbitrarily
and without scientific legitimacy. The typical unstated purpose of such
identification is to remove
To further what Bert says:
You would almost certainly prefer to use robust statistics than
outlier detection.
I believe Greg Snow's TeachingDemos package has a data set outliers
suggesting some of the perils of doing things the outlier-removal way.
Best,
Michael
On Wed, Jul 18, 2012 at 9:14
What is the R code to check whether data series have
outliers or not?
In case noone else has pointed you there, you could try the 'outliers' package.
That contains some of the 'standard' methods of outlier testing for univariate
data.
What you do with them when you find them is a
On 18/07/2012 10:14 AM, Bert Gunter wrote:
checkforoutliers - function(series)NULL
Cheers,
Bert
*Explanation: There is no such thing as a statistical outlier -- or,
rather,outlier is a fraudulent statistical concept, defined arbitrarily
and without scientific legitimacy. The typical unstated
Bert Gunter gunter.ber...@gene.com
on Wed, 18 Jul 2012 07:14:31 -0700 writes:
checkforoutliers - function(series) NULL
Cheers, Bert
*Explanation: There is no such thing as a statistical
outlier -- or, rather,outlier is a fraudulent
statistical concept, defined
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
project.org] On Behalf Of Sajeeka Nanayakkara
Sent: Wednesday, July 18, 2012 6:28 AM
To: r-help@r-project.org
Subject: [R] R code for to check outliers
What is the R code to check whether data
for to check outliers
What is the R code to check whether data series have outliers or not?
Thanks,
Sajeeka Nanayakkara
[[alternative HTML version deleted]]
Sajeeka,
You have been given lots of good information and appropriate warnings. Let me
add another caveat to think about
Subject: [R] R code for to check outliers
What is the R code to check whether data series have outliers or not?
Thanks,
Sajeeka Nanayakkara
[[alternative HTML version deleted]]
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