Re: [R] question from environmental statistics

From: Charles Annis, P.E. <Charles.Annis_at_statisticalengineering.com>
Date: Sat 16 Jul 2005 - 11:08:06 EST


?qqplot

Charles Annis, P.E.

Charles.Annis@StatisticalEngineering.com phone: 561-352-9699
eFax: 614-455-3265
http://www.StatisticalEngineering.com  

-----Original Message-----
From: r-help-bounces@stat.math.ethz.ch
[mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of pantd@unlv.nevada.edu Sent: Friday, July 15, 2005 9:03 PM
To: r-help@stat.math.ethz.ch
Subject: [R] question from environmental statistics

thanks Fran. that was useful but Im still in a fix. its a real life data which
looks like this:
0.9
10.9
24.0

6.7
0.6
1.0
2.4

12.4
7.9
15.8
1.4
7.9
11000.0

(benzene conc. taken after WTC attacks)..its just a small chunk of data i pasted
for you to look at.
its neither normal nor lognormal. someone told me that qq plot does help in determining the distribution. im not sure how to get it.

can someone help me in this.

thanks

Take a look at this document by Vito Ricci: http://cran.r-project.org/doc/contrib/Ricci-distributions-en.pdf

Did you try RSiteSearch("Fit distribution") or a Google search? That will lead you to fit.dist{gnlm} and fitdistr{MASS}

Cheers

Francisco

>From: pantd@unlv.nevada.edu
>To: r-help@stat.math.ethz.ch
>Subject: [R] question from environmental statistics
>Date: Thu, 14 Jul 2005 14:06:45 -0700
>
>
>
>Dear R users
>I want to knw if there is a way in which a raw dataset can be modelled by
>some
>distribution. besides the gof test is there any test involving gamma or
>lognormal that would fit the data.
>
>thank you
>
>-dev



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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat Jul 16 11:12:21 2005

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