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    Re: Rejecting outliers: was: Kurtosis.
    From: Marcel Tschudin
    Date: 2011 Jan 2, 22:24 +0200

    George,
    I must admit that I don't know what this factor 1.25 should relate to.
    I can't see why in a normal distributed dataset the standard deviation
    should change only by selecting the median instead of the mean, which
    in such a normal distributed dataset would be the same. In the case of
    a small dataset with an outlier, where the median is different than
    the mean, sigma will obviously differ when calculating it with respect
    to the median. That's the only difference I'm aware of.
    Marcel
    
    
    
    

       
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