Re: convergent validity

2001-03-29 Thread David Heiser
Sounds like a problem in SEM (Structured Equation Modeling). SEM is not discussed in EDSTAT, but is discussed in SEMNET. DAHeiser = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESS

Re: [Q] Generate a Simple Linear Model

2001-03-29 Thread David Heiser
> well, if you have access to a routine that will generate two variables with > specified r ... then, you can do it ... i have one that runs in minitab ... > it is a macro ... and i know that jon cryer has one too ... > > http://roberts.ed.psu.edu/users/droberts/macro.htm ... check #1 ... > I am n

Re: stan error of r

2001-03-29 Thread Elliot Cramer
Elliot Cramer <[EMAIL PROTECTED]> wrote: : dennis roberts <[EMAIL PROTECTED]> wrote: : : anyone know off hand quickly ... what the formula might be for the standard : : error for r would be IF the population rho value is something OTHER than zero? correctiont: the variance is (1/n)*(1-rho^2)^2

Re: convergent validity

2001-03-29 Thread Donald Burrill
On Thu, 29 Mar 2001, H.Goudriaan wrote in part: > - my questionnaire items are measured on 5- and 7-point Likert scales, > so they're not measured on an interval level Non sequitur. > and consequently not (bivariate) normally distributed; Real data hardly ever is. Do you need it to

convergent validity

2001-03-29 Thread H.Goudriaan
Hi Statisticians, First of all, sorry for posting my question in 3 groups, but I'm a bit of a newby here and I can't find out what the difference is (where can I read the Charters, or whatever it's called?). I would love to have some help on the following: I have 2 questionnaires assessing (phy

Re: rotations and PCA

2001-03-29 Thread Rich Ulrich
On Thu, 29 Mar 2001 10:17:09 +0200, "Nicolas Voirin" <[EMAIL PROTECTED]> wrote: > OK, thanks. > > In fact, it's a "visual" method to see a set of points with the better > view (maximum of variance). > It's like to swivel a cube around to see all of its sides ... but this > in more than 3

Re: stan error of r

2001-03-29 Thread Elliot Cramer
dennis roberts <[EMAIL PROTECTED]> wrote: : anyone know off hand quickly ... what the formula might be for the standard : error for r would be IF the population rho value is something OTHER than zero? It's (1/n)*(1-rho^2)^2 = Ins

Re: [Q] Generate a Simple Linear Model

2001-03-29 Thread dennis roberts
not completely sure what you are requesting but well, if you have access to a routine that will generate two variables with specified r ... then, you can do it ... i have one that runs in minitab ... it is a macro ... and i know that jon cryer has one too ... http://roberts.ed.psu.edu/users/dr

Re: rotations and PCA

2001-03-29 Thread Nicolas Voirin
OK, thanks. In fact, it's a "visual" method to see a set of points with the better view (maximum of variance). It's like to swivel a cube around to see all of its sides ... but this in more than 3D. When I show points in differents planes (F1-F2, F2-F3, F2-F4 ... for example), I make

[Q] Generate a Simple Linear Model

2001-03-29 Thread Chien-Hua Wu
Does anybody know how to generate a simple linear model? -- = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ ===