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  1. Path: sparky!uunet!know!hri.com!ukma!darwin.sura.net!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!destroyer!ncar!noao!amethyst!organpipe.uug.arizona.edu!olympus.as.arizona.edu!freeman
  2. From: freeman@olympus.as.arizona.edu (Jonathan Freeman)
  3. Newsgroups: sci.math.stat
  4. Subject: Fitting normal distribution with skew.
  5. Message-ID: <1992Oct8.215319.27427@organpipe.uug.arizona.edu>
  6. Date: 8 Oct 92 21:53:19 GMT
  7. Sender: news@organpipe.uug.arizona.edu
  8. Distribution: usa
  9. Organization: University of Arizona, Tucson, AZ
  10. Lines: 7
  11.  
  12. I am unclear on how to fit a normal model with a skew component to a
  13. histogram. I can, of course, compute the skew of the data set, 
  14. but that does not tell me if it is a better model than one
  15. without that factor. I would also like to use robust regression
  16. because the data set appears to have a few outliers. References?
  17. For those interested, the data is a histogram of the lumimosities
  18. of low mass stars. Email or post.
  19.