Dear R-helpers,
I would like to do a Spearman rank order test, and used the cor() function
with the method "spearman".
It gives me a number (correlation coefficient?) , but how can I get the
p-value?
Thank you for the help in advance!
Regards,
Anne-Katrin
--
[[alternative HTML version deleted]]
On Thu, 2008-02-28 at 16:17 +0100, Anne-Katrin Link wrote:> Dear R-helpers, > > I would like to do a Spearman rank order test, and used the cor() function > with the method "spearman". > It gives me a number (correlation coefficient?) , but how can I get the > p-value? > Thank you for the help in advance!?cor.test HTH G> > Regards, > Anne-Katrin >-- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
check function ?cor.test().
I hope it helps.
Best,
Dimitris
----
Dimitris Rizopoulos
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Anne-Katrin Link" <anne.link at gmx.de>
To: <r-help at r-project.org>
Sent: Thursday, February 28, 2008 4:17 PM
Subject: [R] p-value in Spearman rank order
> Dear R-helpers,
>
> I would like to do a Spearman rank order test, and used the cor()
> function
> with the method "spearman".
> It gives me a number (correlation coefficient?) , but how can I get
> the
> p-value?
> Thank you for the help in advance!
>
> Regards,
> Anne-Katrin
>
> --
>
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
On 2/28/08, Anne-Katrin Link <anne.link at gmx.de> wrote:> I would like to do a Spearman rank order test, and used the cor() function > with the method "spearman". > It gives me a number (correlation coefficient?) , but how can I get the > p-value?You're probably looking for rcorr() from Hmisc. It gives the correlation, missing values and p-values. Check [1] and [2] for examples and several explanations. There is also a nice plot [3]. Hope this is of help, Liviu [1] http://oit.utk.edu/scc/RforSAS&SPSSusers.pdf [2] http://www.statmethods.net/stats/correlations.html [3] http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=137
Has your question been answered yet?
x=c(1,2,4,3,6,8)
y=c(3,2,5,7,4,6)
cor.test(x,y,method="spearman")
####And that's how you "extract" the p-value:
cor.test(x,y,method="s")$p.value
Cheers,
Daniel
--------------------------
Abstrakthelfer helfen wenig
--------------------------
-----Urspr?ngliche Nachricht-----
Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] Im
Auftrag von Anne-Katrin Link
Gesendet: Thursday, February 28, 2008 10:17 AM
An: r-help at r-project.org
Betreff: [R] p-value in Spearman rank order
Dear R-helpers,
I would like to do a Spearman rank order test, and used the cor() function
with the method "spearman".
It gives me a number (correlation coefficient?) , but how can I get the
p-value?
Thank you for the help in advance!
Regards,
Anne-Katrin
--
[[alternative HTML version deleted]]
______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.