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GoF for Beta distribution

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GoF for Beta distribution

Dear all,

 

I would like some help understanding why I am getting the message '' None of the EDF goodness-of-fit statistics for the Beta distribution are available.'' when I am testing the fitting of a beta distribution to a given dataset. 

Based on the histogram and the QQplot, the fitting appears to be very satisfactory, but i would like to verify it, for instance, by the KS test.

 

I can see at http://support.sas.com/documentation/cdl/en/procstat/68142/HTML/default/viewer.htm#procstat_univaria... that the tests should be available for beta. Since the parameters are being calculated from my sample, arent they assumed as ''known'' ? 

 

p.s. I am using SAS enterprise guide, function describe --> distribution analysis 

 

Kind regards,

Georgios 

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