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Re: inverse values for the F distribution

From: Jason Hooper Stover <jason at sakla dot net>
To: Rajarshi Guha <rajarshi at presidency dot com>
Cc: Martin Jansche <jansche at ling dot ohio-state dot edu>, gsl-discuss at sources dot redhat dot com
Date: Tue, 2 Sep 2003 20:20:15 -0400
Subject: Re: inverse values for the F distribution
References: <Pine.SOL.4.33.0309021531400.27048-100000@julius.ling.ohio-state.edu> <1062536902.5264.20.camel@ra.chem.psu.edu>

> Thanks. Actually I was doing the latter but the values I was getting
> seemed surprising (or maybe I just dont know what types of values to
> expect!). For example gsl_cdf_fdist_Q(3.4935,3,28) gives me 4223.0 which
> is clearly greater than 0.05 (my desired level of significance). I had
> thought of checking by calculating a critical value as well.

Yes, 4223.0 would qualify as bug for a return value of a cdf. I ran the
same code and got 0.028569, though.

> 
> Just out of curioisity, why is there no inverse function for the F
> distribution?

I ran out of time before finishing everything.

-Jason

> -------------------------------------------------------------------
> Rajarshi Guha <rajarshi@presidency.com> <http://jijo.cjb.net>
> GPG Fingerprint: 0CCA 8EE2 2EEB 25E2 AB04 06F7 1BB9 E634 9B87 56EE
> -------------------------------------------------------------------
> Q: What do you get when you put a spinning flywheel in a casket and
> turn a corner?
> A: A funeral precession.

References:
- Re: inverse values for the F distribution
  - From: Martin Jansche
- Re: inverse values for the F distribution
  - From: Rajarshi Guha

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