Re: [R] Ellipse that Contains 95% of the Observed Data

Typo: "**Paul_i** Exclusion Principle" Bert Gunter Genentech Nonclinical Biostatistics __ R-help@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 pro

Re: [R] Ellipse that Contains 95% of the Observed Data

oun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Tom La Bone Sent: Monday, March 29, 2010 9:56 AM To: r-help@r-project.org Subject: Re: [R] Ellipse that Contains 95% of the Observed Data I know what "get a bigger sample means". I have no clue what "ask a

Re: [R] Ellipse that Contains 95% of the Observed Data

I know what "get a bigger sample means". I have no clue what "ask a more statistically meaningful question" means. Can you elaborate a bit? Tom -- View this message in context: http://n4.nabble.com/Ellipse-that-Contains-95-of-the-Observed-Data-tp1694538p1695357.html Sent from the R help mailing

Re: [R] Ellipse that Contains 95% of the Observed Data

Easy. See below. Bert Gunter Genentech Nonclinical Biostatistics -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Tom La Bone Sent: Monday, March 29, 2010 6:56 AM To: r-help@r-project.org Subject: Re: [R] Ellipse that Contains 95

Re: [R] Ellipse that Contains 95% of the Observed Data

for a picture of the bagplot, try going to http://www.statmethods.net/graphs/boxplot.html -- View this message in context: http://n4.nabble.com/Ellipse-that-Contains-95-of-the-Observed-Data-tp1694538p1695236.html Sent from the R help mailing list archive at Nabble.com. _

Re: [R] Ellipse that Contains 95% of the Observed Data

Concisely, here is what I am trying to do: #I take a random sample of 300 measurements. After I have the measurements #I post stratify them to 80 type A measurements and 220 type B measurements. #These measurements tend to be lognormally distributed so I fit them to #determine the geometric me

Re: [R] Ellipse that Contains 95% of the Observed Data

The bagplot at http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=112 gives a nonparametric 2-d view analagous to a boxplot. S Ellison > > I can take the results of a simulation with one random variable and generate > an empirical interval that contains 95% of the observations, e.g.

Re: [R] Ellipse that Contains 95% of the Observed Data

On 03/29/2010 07:17 PM, Barry Rowlingson wrote: ... I think the problem as posed doesn't produce a unique ellipse. You could start with a circle of radius 0 centered on mean(x),mean(y) and then increase the radius until it has 95% of the points in it. As long as your points are in continuous sp

Re: [R] Ellipse that Contains 95% of the Observed Data

On Mon, Mar 29, 2010 at 4:02 AM, Ben Bolker wrote: >  I'll be interested to hear what others come up with. >  I'm not sure the problem as you have stated it is well-posed, or > necessarily possible. Suppose there is a true unknown > bivariate probability distribution with a non-elliptical 95% > q

Re: [R] Ellipse that Contains 95% of the Observed Data

Tom La Bone gforcecable.com> writes: > > > I can take the results of a simulation with one random variable and generate > an empirical interval that contains 95% of the observations, e.g., > > x <- rnorm(1) > quantile(x,probs=c(0.025,0.975)) > > Is there an R function that can take the re

[R] Ellipse that Contains 95% of the Observed Data

I can take the results of a simulation with one random variable and generate an empirical interval that contains 95% of the observations, e.g., x <- rnorm(1) quantile(x,probs=c(0.025,0.975)) Is there an R function that can take the results from two random variables and generate an empirical