RE: When does correlation imply causation?

2001-12-07 Thread jim clark
Hi On 6 Dec 2001, David Heiser wrote: Most of the focus is on structural equation modeling (SEM). For statisticians, a quick referral to Jim Steiger's article Driving Fast in Reverse in JASA March 2001, p331-p338 (if you have it around) is a quick discourse on SEM and the inherent problems

generalised gaussian distribution

2001-12-07 Thread Chia C Chong
Hi!! Any idea where can I get more information on generalised gaussin distribution??? = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at

Question about concatenating probability distributions

2001-12-07 Thread Jacek Gomoluch
In a stochastic process the number of customers which are arriving at a server (during a time intervall) is desribed by a Poisson distribution: P(n)=exp(-v) * (v^n)/(n!) Each arriving customer has a task to be carried out of which the size (in units) is described by a lognormal distribution:

Re: When does correlation imply causation?

2001-12-07 Thread Jay Warner
Not only classic, but documented(!) See George E. P. Box ;Hunter, William G., and Hunter, J. Stuart, Statistics for Experimenters, John Wiley Sons, Inc., New York, NY, 1978 ,ISBN 0-471-09315-7 Storks bring babies: pg. 8 They reference the original data, and Lars Pallesen, who dug it out.

uniform distribution

2001-12-07 Thread Nathaniel
Does anyone could give me an analitical equation of multivariate uniform distribution. For a one variable X, f(x)=1/(a-b)1, 1 - indicator. But how is it for n variable. Thanks Nathaniel = Instructions for joining and leaving

Re: Question about concatenating probability distributions

2001-12-07 Thread Peter Rabinovitch
If the poisson arrival process and the work process are independent, then have a look at Wald's law in (almost) any probability book. For example, the mean amount of work is then simply the product of the means of each RV, in your case: E(amount of work in a fixed time interval)=v*E(U) where U

Teach English in KOREA and have lot of FUN.

2001-12-07 Thread Mike
Do you want to travel to Korea and teach? Are you a college graduate, BA or BS Looking for fun exciting experience in Korea? We are looking for English teachers."All majors welcome,No teachingexperience required." Housing and Air Ticket provided. Salaries range between CAD 2500-2900, USD

Re: Evaluating students: A Statistical Perspective

2001-12-07 Thread Dennis Roberts
At 08:08 PM 12/7/01 +, J. Williams wrote: On 6 Dec 2001 11:34:20 -0800, [EMAIL PROTECTED] (Dennis Roberts) wrote: if anything, selectivity has decreased at some of these top schools due to the fact that given their extremely high tuition ... i was just saying that IF anything had

Re: What usually should be done with missing values when I am conducting a t test or other tests?

2001-12-07 Thread Rich Ulrich
On Fri, 07 Dec 2001 04:59:46 GMT, Richard J Burke [EMAIL PROTECTED] wrote: jenny wrote: What should I do with the missing values in my data. I ned to perform a t test of two samples to test the mean difference between them. How should I handle them in S-Plus or SAS? Thanks. JJ

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2001-12-07 Thread stockway
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percent point function of laplacian function

2001-12-07 Thread Chia C Chong
What is the percent point function of laplcaian function?? Thanks... CCC = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at