Re: fast calculation of normal distribution ...

2000-10-27 Thread Alan Miller
Gökhan wrote in message [EMAIL PROTECTED]... Hi! I wonder how the public is evaluating the normal distribution function in realworld applications. I am implementing some methods where i have to calculate different times probability functions relying on normal distribution functions with

Re: fast calculation of normal distribution ...

2000-10-27 Thread Gökhan
Alan Miller schrieb: Mention of the covariance matrix suggests that it is the multivariate normal which is wanted, not the simple univariate normal. Of course the multivariate normal. The multivariate normal integral is much more difficult. To be concrete i have to calculate the density

Re: fast calculation of normal distribution ...

2000-10-27 Thread Gökhan
I presume that you want the density of a multivar normal distrib. You don't calculate the inverse; you just need the quadratic form. I think that Searle's matrix algebra book gives the computations. off hand, for the quad form x'A-1x I'd get the cholesky factor of A = LL' and solve for

Statistics problem (HELP!)

2000-10-27 Thread Dr. S. Shapiro
Dear Colleagues, Most of my work is descriptive and qualitative, and the statistical procedures I typically use are simple things like averages and standard deviations. However, a situation has arisen requiring more statistical knowledge than I possess, in which case I hope that someone

Re: Stat pkg for old Mac

2000-10-27 Thread Lee Creighton
JMP version 3 would run on this system as well. Try sales at www.sas.com to see if JMP 3.2.6 is still available. "David J Firth" [EMAIL PROTECTED] wrote in message 8tarcm$das$[EMAIL PROTECTED]">news:8tarcm$das$[EMAIL PROTECTED]... Following my policy of reuse and recycle, I'm using an old Mac

Re: Winsorisation: who was Winsor ?

2000-10-27 Thread Rich Ulrich
On Thu, 26 Oct 2000 20:42:02 +0200, Damion Milne [EMAIL PROTECTED] wrote: I would like to add some biographical information on Winsor to my slides on the winsorisation technique, which deals with outliers in a distribution. Winsorisation is described in Afifi and Azen 1979, by Academic

RE: Stat pkg for old Mac

2000-10-27 Thread Olsen, Chris
Lee and All -- I just visited the www.duxbury.com site yesterday, and I think I remember they showed older _student_ versions. You might try there also. -- Chris Chris Olsen George Washington High School 2205 Forest Dr. S.E. Cedar Rapids, IA 52403 (319)-398-2161 [EMAIL PROTECTED]

Re: Stat pkg for old Mac

2000-10-27 Thread dennis roberts
don't forget to look at all that is available online for doing analysis ... http://members.aol.com/johnp71/javastat.html check out specific routines or ... click on the jump to free software ... some works with macs =

Combining histograms

2000-10-27 Thread Dubinse
I have the need to combine a number of data sets that are in the form of histograms where the class marks and boundaries may vary from data set to data set. The data represents numerical counts as a function of particle size on an asummedly continuoous scale. I want to combine some of the data

Re: Winsorisation: who was Winsor ?

2000-10-27 Thread Bob Wheeler
Charles Payne Winsor (It might be "Paine".) He died in the early 50's. There was a biography in the American Statistician, I think. Rich Ulrich wrote: On Thu, 26 Oct 2000 20:42:02 +0200, Damion Milne [EMAIL PROTECTED] wrote: I would like to add some biographical information on Winsor to

Re: Winsorisation: who was Winsor ?

2000-10-27 Thread Bob Hayden
- Forwarded message from Bob Wheeler - Charles Payne Winsor (It might be "Paine".) He died in the early 50's. There was a biography in the American Statistician, I think. Rich Ulrich wrote: ("Could anyone suggest references for me ...?" would be a gentler way to request

Re: Error in polls, Part 2

2000-10-27 Thread Rich Ulrich
On 27 Oct 2000 07:26:43 -0700, [EMAIL PROTECTED] (Wolfgang Rolke) wrote: snip, about polling ... A very nice discussion of the issues involved can be found at http://slate.msn.com/framegame/entries/00-10-26_92147.asp . An explanation of the

Re: Combining histograms

2000-10-27 Thread Rich Ulrich
On 27 Oct 2000 15:02:50 GMT, [EMAIL PROTECTED] (Dubinse) wrote: I have the need to combine a number of data sets that are in the form of histograms where the class marks and boundaries may vary from data set to data set. The data represents numerical counts as a function of particle size on

Re: Stat pkg for old Mac

2000-10-27 Thread A.J. Rossini
There is always XLispStat, and the graphical front-ends, ViSta and ARC. Why pay more when there is perfectly adequate and exceptional software available? best, -tony -- A.J. RossiniRsrch. Asst. Prof. of Biostatistics BlindGlobe Networks (home/default) [EMAIL

Re: Error in polls, Part 2

2000-10-27 Thread Rich Ulrich
uh-oh, what am I saying ... On Fri, 27 Oct 2000 14:21:36 -0400, Rich Ulrich [EMAIL PROTECTED] wrote: snip, cite No, you have it wrong. Think about the case where the two candidates/options add exactly to 100% -- the "4% error" is exactly the same 4% for both, since one goes down exactly

Re: Winsorisation: who was Winsor ?

2000-10-27 Thread Rich Ulrich
On Fri, 27 Oct 2000 12:24:41 -0400, Bob Wheeler [EMAIL PROTECTED] wrote: Charles Payne Winsor (It might be "Paine".) He died in the early 50's. There was a biography in the American Statistician, I think. Rich Ulrich wrote: snip, my post, including where I misspelled /mistyped

creative statistics

2000-10-27 Thread Susan R Murray
this was also posted to sci.stat.math what is the difference between these newsgroups? I'm working on an online test at: http://www.dial020.com/smurray/selfbuildingtest The test lets people answer questions made up by other people who took the test before. Every test is 9 questions from three