[R] good method of removing outliers?
paul at paulhurley.co.uk
Sat Dec 31 00:01:01 CET 2011
On 30/12/11 17:03, Michael wrote:
> Happy holidays all!
> I know it's very subjective to determine whether some data is outlier or
> But are there reasonally good and realistic methods of identifying outliers
> in R?
> Thanks a lot!
Ignoring the moral questions for a moment (totaly depends on your
defintion of an outlier, your dataset, it's distribution etc etc), for
the technical implementation, try the outliers package
implements the Grubbs and Cox tests. Also, see this stackoverflow
answer of mine that shows an implementation of the Llund test for
outliers within a regression ( http://stackoverflow.com/a/1444548/74658 ).
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