[R] Calculation of ratio distribution properties

Ravi Varadhan rvaradhan at jhmi.edu
Fri May 25 20:24:20 CEST 2007


Attached is an R function to do this, along with an example that will
reproduce the MathCad plot shown in your attached paper. I haven't checked
it thoroughly, but it seems to reproduce the MathCad example well.



Ravi Varadhan, Ph.D.

Assistant Professor, The Center on Aging and Health

Division of Geriatric Medicine and Gerontology 

Johns Hopkins University

Ph: (410) 502-2619

Fax: (410) 614-9625

Email: rvaradhan at jhmi.edu

Webpage:  http://www.jhsph.edu/agingandhealth/People/Faculty/Varadhan.html



-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Mike Lawrence
Sent: Friday, May 25, 2007 1:55 PM
To: Lucke, Joseph F
Cc: Rhelp
Subject: Re: [R] Calculation of ratio distribution properties

According to the paper I cited, there is controversy over the  
sufficiency of Hinkley's solution, hence their proposed more complete  

On 25-May-07, at 2:45 PM, Lucke, Joseph F wrote:

> The exact ratio is given in
> On the Ratio of Two Correlated Normal Random Variables, D. V.  
> Hinkley, Biometrika, Vol. 56, No. 3. (Dec., 1969), pp. 635-639.

Mike Lawrence
Graduate Student, Department of Psychology, Dalhousie University

Website: http://myweb.dal.ca/mc973993
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