[R] inverse F distribution in R?

Peter Dalgaard P.Dalgaard at biostat.ku.dk
Thu Apr 24 17:03:32 CEST 2008


Jennifer Balch wrote:
> Dear all,
>
> I'm looking for a function that calls the inverse F-distribution.  
> Something equivalent to FINV in matlab or excel.
>
> Does anyone know if such a function already exists for R? (I haven't  
> been able to find one.)
>
> Thanks for any leads.
>
>   
I would guess that they are qf() or a variant thereof. I gather that
_fpdf
<http://www.mathworks.com/access/helpdesk/help/toolbox/stats/fpdf.html>__,
fcdf
<http://www.mathworks.com/access/helpdesk/help/toolbox/stats/fcdf.html>,
finv
<http://www.mathworks.com/access/helpdesk/help/toolbox/stats/finv.html>,
frnd
<http://www.mathworks.com/access/helpdesk/help/toolbox/stats/frnd.html>
i_n matlab is df, pf, qf, and rf in R. We don't have an equivalent of
fstat for mean and variance of the F distribution (this might actually
be nice to have).




> Best,
> Jennifer
>
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>   


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907



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