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
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 at unlv.nevada.edu
>To: r-help at 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
>
>______________________________________________
>R-help at 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
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 at unlv.nevada.edu
>To: r-help at 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
?qqplot
Charles Annis, P.E.
Charles.Annis at StatisticalEngineering.com
phone: 561-352-9699
eFax: 614-455-3265
http://www.StatisticalEngineering.com
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of pantd at
unlv.nevada.edu
Sent: Friday, July 15, 2005 9:03 PM
To: r-help at 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 at unlv.nevada.edu
>To: r-help at 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
______________________________________________
R-help at 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
Dear Dev I believe you may need some conceptual guidance in probability theory and statistics rather than help with a specific R function to solve your analysis. May I recomend you to visit the statistic consulting office in your campus or perhaps review a textbook on applied probability. Best wishes Francisco>From: pantd at unlv.nevada.edu >To: r-help at stat.math.ethz.ch >CC: gerifalte28 at hotmail.com >Subject: [R] question from environmental statistics >Date: Fri, 15 Jul 2005 18:03:15 -0700 > >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 at unlv.nevada.edu > >To: r-help at 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