A complex case of distribution fitting

  Dear all,


  I need to fit a set of empirical data to cumulative normal distribution to
  find the mean and sd of theoretical distribution. But I assume that my data
  set  describes only part of PDF, for example, only half of theoretical
  distribution. What function allows it in R? Thank you.

See

 	Introduction to R
 	Sections 8.1 and 11.7.2

and review the Posting Guide to reframe your question if you need more 
help.

Chuck

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Charles C. Berry                            (858) 534-2098
                                             Dept of Family/Preventive Medicine
E mailto:cberry at tajo.ucsd.edu	            UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901

Are you referring to a truncated normal? 

(http://en.wikipedia.org/wiki/Truncated_normal_distribution)

Glen

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