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Message-ID: <4034B8B5.3010208@statistik.uni-dortmund.de>
Date: 2004-02-19T13:23:01Z
From: Uwe Ligges
Subject: F Dist
In-Reply-To: <4034B40E.2040803@uv.es>

Joerg Schaber wrote:

> Hi,
> 
> why is it that in tables for the F distribution it is for example
> 
> F0.95[6,28]=2.45 or F0.95[10,20]=2.35
> 
> but
> 
>  > pf(6,28,2.45)
> [1] 0.8854934
>  > pf(10,20,2.35)
> [1] 0.9300167
> 
> Thanks for clarifying,
> 
> jeorg


What you are really going to do is:

pf(2.45, 6, 28)   # [1] 0.9503618
pf(2.35, 10, 20)  # [1] 0.950176

Uwe Ligges