Re: homogeneity of variances - Hartley's F-max

2000-05-17 Thread dennis roberts
At 11:08 AM 5/17/00 -0400, you wrote: >On Wed, 17 May 2000 01:57:41 GMT, [EMAIL PROTECTED] wrote: > > < snip, stuff from previous response. About F-max > > > >... And finally could one say that there > > is a "significant" difference in heteroscedasticity between the "A" > > sam

Re: homogeneity of variances - Hartley's F-max

2000-05-17 Thread Rich Ulrich
On Wed, 17 May 2000 01:57:41 GMT, [EMAIL PROTECTED] wrote: < snip, stuff from previous response. About F-max > >... And finally could one say that there > is a "significant" difference in heteroscedasticity between the "A" > samples than the "B" samples based soley on the diff

Re: homogeneity of variances - Hartley's F-max

2000-05-16 Thread T.S. Lim
I'm truly amazed finding people who still want to use Hartley's test. If you REALLY REALLY have to test for equality of variances, your best bet is Levene's test (with sample median). Go to http://www.recursive-partitioning.com/hov for software. The manual lists as a reference our paper tha

Re: homogeneity of variances - Hartley's F-max

2000-05-16 Thread stevesawyer
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] wrote: > What you do mean when you say, "I have two groups of samples"? > How does this differ from having one large group of samples? > > Hartley's will *always* take into account the respective means, in > the sense that the variance are

Re: homogeneity of variances - Hartley's F-max

2000-05-16 Thread Rich Ulrich
On Tue, 16 May 2000 15:21:34 GMT, [EMAIL PROTECTED] wrote: > Is it possible to compare two unrelated groups of samples using > Hartley's F-max? In other words if I have two groups of samples, can I > use Hartley's F-max to compare their "heterogeneity" without taking > into account their respect

Re: homogeneity of variances - Hartley's F-max

2000-05-16 Thread stevesawyer
Is it possible to compare two unrelated groups of samples using Hartley's F-max? In other words if I have two groups of samples, can I use Hartley's F-max to compare their "heterogeneity" without taking into account their respective means? Sent via Deja.com http://www.deja.com/ Before you buy.