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help for robmean
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Trimmed, winsorized means &amp; Huber 1-step estimator
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 robmean varname  [if exp] [in range] [, trim(pro) k(const) ]
 
Description
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robmean computes untrimmed, trimmed, winsorized statistics,
       1-step Huber estimator and a modified 1-step estimator.
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Options
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trim indicates the proportion of cases to trim from each end
     of the distribution (default = 0.2). 
     
k the constant used for the M-estimator (default = 1.28).     
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Examples
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 . robmean write
 . robmean write, trim(.1)
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Reference
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Wilcox, R. (2001)  Fundamentals of modern statistical methods.
     New York: Springer.
Wilcox, R. (2002)  Applying Contemporary Statistical Techniques.
     San Diego: Academic Press.
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Author
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      Philip B. Ender
      UCLA Department of Education
      UCLA Academic Technology Services
      enderatucla.edu 
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