Re: [R] R code for to check outliers

2012-07-20 Thread Angus Wallace
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

[R] R code for to check outliers

2012-07-18 Thread Sajeeka Nanayakkara
 What is the R code to check whether data series have outliers or not? Thanks, Sajeeka Nanayakkara [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the

Re: [R] R code for to check outliers

2012-07-18 Thread Bert Gunter
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

Re: [R] R code for to check outliers

2012-07-18 Thread R. Michael Weylandt
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

Re: [R] R code for to check outliers

2012-07-18 Thread S Ellison
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

Re: [R] R code for to check outliers

2012-07-18 Thread Duncan Murdoch
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

Re: [R] R code for to check outliers

2012-07-18 Thread Martin Maechler
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

Re: [R] R code for to check outliers

2012-07-18 Thread Nordlund, Dan (DSHS/RDA)
-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

Re: [R] R code for to check outliers

2012-07-18 Thread Rui Barradas
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

Re: [R] R code for to check outliers

2012-07-18 Thread arun
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]] __ R-help@r-project.org mailing list https://stat.ethz.ch