[R] Outliers

Richard A. O'Keefe ok at cs.otago.ac.nz
Mon Jul 5 02:41:58 CEST 2004

Last week there was a thread on outlier detection.
I came across an article which has a very interesting paragraph.

The article is
    Missing Values, Outliers, Robust Statistics, & Non-parametric Methods
    by Shaun Burke, RHM Techology Ltd, High Wycombe, Buckinghamshire, UK.
It was the fourth article in a series which appeared in
    Scientific Data Management
in 1998 and 1998.

The very interesting paragraph is this:

    NB: It should be noted that following a
    judgement in a US court, the Food and
    Drug Administration 9FDA) in a guide -
    Guide to inspection of pharmaceutical
    quality control laboratories - has
    specifically prohibited the use of outlier

Elsewhere, the article recommends the use of outlier tests as a way of
locating possible transcription errors, but NOT as a way of discarding data.

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