To further David's comment, just think what the world would be like if Alexander Fleming had discarded an obvious outlier in 1928 ( http://en.wikipedia.org/wiki/Penicillin#Discovery).
On Tue, Apr 9, 2013 at 7:46 AM, David Winsemius <dwinsem...@comcast.net>wrote: > > On Apr 9, 2013, at 4:12 AM, Lorna wrote: > > Hi Everyone, >> >> I have a very long list of data-points (+2300) and i know from my >> histogram >> that there are outliers which are affecting my mean. >> >> I was wondering if anyone on here knows a way i can quickly get R to >> calculate and remove data which is 3 standard deviations from the mean? I >> am >> hoping this will tidy my data and give me a repeatable method of tidying >> for >> future data collection. >> >> Please if you do post code, make it as user friendly as possible! I am >> not a >> very good programmer, i can load my data into R and do basic stats on it >> however i havent tried much else.... >> >> Thank you in advance for any advice given :) >> >> > This plan has no statistical justification. Around here we have reverence > for data. Outliers are often meaningful. Requests to distort your data > should be accompanied by a coherent argument. > > -- > > David Winsemius, MD > Alameda, CA, USA > > > ______________________________**________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> > PLEASE do read the posting guide http://www.R-project.org/** > posting-guide.html <http://www.R-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > -- Gregory (Greg) L. Snow Ph.D. 538...@gmail.com [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
