[R] feed cut() output into goodness-of-fit tests

[Ista Zahn]

On Fri, Oct 15, 2010 at 10:22 AM, Andrei Zorine <zoav1602 at gmail.com> wrote:
> Hello,
> My question is assuming I have cut()'ed my sample and look at the
> table() of it, how can I compute probabilities for the bins?

I actually don't know what you mean by this (my own ignorance probably).

 Do I have
> to parse table's names() to fetch bin endpoints

For equal-width bins you can use

seq(min(x), max(x), by = (max(x) - min(x))/10)

HTH,
Ista

to pass them to
> p[distr-name] functions? i really don't want to input arguments to PDF
> functions by hand (nor copy-and-paste way).
>
>> x.fr <- table(cut(x,10))
>> x.fr
>
> (0.0617,0.549]   (0.549,1.04]    (1.04,1.52]    (1.52,2.01]     (2.01,2.5]
>           16             28             26             18              6
>   (2.5,2.99]    (2.99,3.48]    (3.48,3.96]    (3.96,4.45]    (4.45,4.94]
>            3              2              0              0              1
>
>> names(x.fr)
>  [1] "(0.0617,0.549]" "(0.549,1.04]"   "(1.04,1.52]"    "(1.52,2.01]"
>  [5] "(2.01,2.5]"     "(2.5,2.99]"     "(2.99,3.48]"    "(3.48,3.96]"
>  [9] "(3.96,4.45]"    "(4.45,4.94]"
>
>
> --
>
> Andrei Zorine
>
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-- 
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org