1997 | OriginalPaper | Chapter
Robust Statistics
Authors : W. N. Venables, B. D. Ripley
Published in: Modern Applied Statistics with S-PLUS
Publisher: Springer New York
Included in: Professional Book Archive
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Outliers are sample values which cause surprise in relation to the majority of the sample. This is not a pejorative term; outliers may be correct, but they should always be checked for transcription errors. They can play havoc with standard statistical methods, and many robust and resistant methods have been developed since 1960 to be less sensitive to outliers.