[R] calculating probability from the density function
Bert Gunter
gunter.berton at gene.com
Mon Oct 1 17:33:43 CEST 2012
Forget density(). Smooth the ecdf instead.
?lowess
?smooth.spline
?monotone.smooth (in package fda, for monotone smoothing, which may be
preferable)
?locfit (in package locfit)
... and many many others
-- Bert
On Mon, Oct 1, 2012 at 6:46 AM, Eugene Kanshin <kanshined1 at gmail.com> wrote:
> Hello,
> I have a data x with normal (or very close to normal) distribution, I can
> plot a density distribution with density(x,...). My question is is there
> any way to calculate an area under this distribution (=probability) for
> particular range of x values, let's say for x from 0 to 2? I was not able
> to find any kind of simple procedure to do this.
> Thanks in advance for your help,
> Evgeny.
>
> [[alternative HTML version deleted]]
>
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--
Bert Gunter
Genentech Nonclinical Biostatistics
Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
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