RE: What is a confidence interval?

-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gordon D. Pusch Sent: Thursday, September 27, 2001 7:33 PM To: [EMAIL PROTECTED] Subject: Re: What is a confidence interval? "John Jackson" <[EMAIL PROTECTED]> writes: > this is the second time I have se

Re: What is a confidence interval?

"John Jackson" <[EMAIL PROTECTED]> writes: > this is the second time I have seen this word used: "frequentist"? > What does it mean? ``Frequentist'' is the term used by Bayesians to describe partisans of Fisher et al's revisionist edict that ``probability'' shall be declared to be semantically

Question on Gaussian distribution

[ This is a repost of the following article: ] [ From: Law Hiu Chung <[EMAIL PROTECTED]> ] [ Subject: Question on Gaussian distribution ] [ Newsgroups: sci.stat.math

Re: What is a confidence interval?

In article , John Jackson <[EMAIL PROTECTED]> wrote: >this is the second time I have seen this word used: "frequentist"? What does >it mean? It's the philosophy of statistics that holds that probability can meaningfully be applied only to repeatable phenomena, and

Re: Translating Error of estimate into fraction of Sigma

This is a better example than the apples (I hope). This time is their is a n=x provided. "Jay Warner" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > "@Home" wrote: > > > I have estimation of mean / confidence level problem with very litte data > > to go on

Re: What is a confidence interval?

this is the second time I have seen this word used: "frequentist"? What does it mean? "Radford Neal" <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > In article <[EMAIL PROTECTED]>, > Dennis Roberts <[EMAIL PROTECTED]> wrote: > > >as a start, you could relate e

Re: Confidence intervals

In article <000101c14787$f06dcf90$e10e6a81@PEDUCT225>, <[EMAIL PROTECTED]> wrote: #No more than hypothesis tests necessarily tell you when the null #hypothesis #is false. Nothing is certain in statistics but uncertainty. In what way does a CI tell you where the parameter was (your word), if y

RE: Confidence intervals

No more than hypothesis tests necessarily tell you when the null hypothesis is false. Nothing is certain in statistics but uncertainty. Paul R. Swank, Ph.D. Professor Developmental Pediatrics UT Houston Health Science Center -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTE

Re: What is a confidence interval?

Dennis Roberts wrote: > in the case of CIs ... no, you are not sure at all that the range you got > in your CI encompasses the parameter but, what are the odds that it does > NOT? generally, fairly small. You're slipping into Bayesian territory... I would say the answer to your question is, "I

Re: p value

It seems to me that any well-designed experiment, by definition, leaves only two reasonable explanations for favorable results: the desired effect and chance. The low p-value (nearly) eliminates chance. Jonathan Fry SPSS Inc. --- Denni

Re: Analysis of covariance

I would have to respectfully disagree with Dennis' comment also. Having the pre values twice in the model does not hurt or change anything in interpreting the treatment effect. BUT I do not like this approach. It makes the results more difficult to interpret when you do have a variable in both

Re: Confidence intervals

In article <008201c14763$9392f260$e10e6a81@PEDUCT225>, <[EMAIL PROTECTED]> wrote: #I use to find that students respoded well to the idea that the hypothesis #test told you, within the limits of likelihood set, where the parameter #wasn't while confidence intervals told you where the parameter wa

Re: E as a % of a standard deviation

There is a specific problem associated w/this formula: "I need to do a spot check of our inventory of CDs to ascertain which ones are genuine CDs from the factory and which ones are counterfeit CDs "burned" by a forger. I have recommeded that we take a random sample by SKU numbers and I was told

Re: What is a confidence interval?

(Warren) wrote in message: > So, what is your best way to explain a CI? How do you explain it > without using some esoteric discussion of probability? I prefer to focus on the reliability of the estimate and say it is: "A range of values for an estimate that reflect its unreliability and whi

Re: What is a confidence interval?

At 07:33 AM 9/27/01 -0700, Warren wrote: >Now, we take our sample mean and s.d. and we compute a CI. We know >we can't say anything about a probability for this single CI...it >either >contains the mean or it doesn't. So, what DOES a CI tell us? Does it >really give you a range of values wher

Re: CIs

Dennis Roberts wrote: > > it seems to me that the notion of a confidence interval is a general > concept ... having to do with estimating some unknown quantity in which > errors are known to occur or be present in that estimation process > > in general, the generic version of a CI is: > >

p value

let's say that you do a simple (well executed) 2 group study ... treatment/control ... and, are interested in the mean difference ... and find that a simple t test shows a p value (with mean in favor of treatment) of .009 while it generally seems to be held that such a p value would suggest th

Tenure Track Position in Statistics

Title: Tenure Track Position in Statistics I just want to inform you on the following available position. Tenure-Track Position in Statistics University of Minnesota, Morris The University of Minnesota, Morris seeks an individual who combines broad intellectual interests with a strong commitmen

Confidence intervals

I use to find that students respoded well to the idea that the hypothesis test told you, within the limits of likelihood set, where the parameter wasn't while confidence intervals told you where the parameter was. Paul R. Swank, Ph.D. Professor Developmental Pediatrics UT Houston Health Science C

RE: Analysis of covariance

Some years ago I did a simulation on the pretest-posttest control group design lokking at three methods of analysis, ANCOVA, repeated measures ANOVA, and treatment by block factorial ANOVA (blocking on the pretest using a median split). I found that that with typical sample sizes, the repeated mea

Re: CIs

Dennis Roberts wrote: > > it seems to me that the notion of a confidence interval is a general > concept ... having to do with estimating some unknown quantity in which > errors are known to occur or be present in that estimation process > > in general, the generic version of a CI is: > >

CIs

it seems to me that the notion of a confidence interval is a general concept ... having to do with estimating some unknown quantity in which errors are known to occur or be present in that estimation process in general, the generic version of a CI is: statistic/estimator +/- (multipl

Re: What is a confidence interval?

Dennis Roberts wrote: > as a start, you could relate everyday examples where the notion of CI > seems to make sense > > A. you observe a friend in terms of his/her lateness when planning to > meet you somewhere ... over time, you take 'samples' of late values ... > in a sense you have means .

History of statistical package

I'm lookng for a history, if exists, of the cariuos statistcal package. Their Philosophy, their changment throgugh the release. anyone know anythingh about this topic? I'll apprecieted very much your help A kiss from your Urlo = In

Re: Analysis of covariance

Hi On 26 Sep 2001, Burke Johnson wrote: > R Pretest Treatment Posttest > R PretestControl Posttest > In the social sciences (e.g., see Pedhazur's popular > regression text), the most popular analysis seems to be to > run a GLM (this version is often called an ANCOVA), where Y > is