On Mon, 31 Jul 2000, auda wrote:

> What kind of procedure should I use to compare the varience between
> different experimental groups?

Well, that depends on a number of things:  e.g.,
  whether you wish to test a hypothesis, or produce a confidence interval;
  whether differences in the means are relevant;
  what distributional assumptions you are willing to make;
  how many experimental groups there are;
  what design structure they embody. 
        Useful advice may require some detailed information about the 
situation you intend to address, and why you want to compare variances. 
(Rather than, say, conduct an analysis of variance, which in fact 
compares means.)
                        -- DFB.
 ------------------------------------------------------------------------
 Donald F. Burrill                                 [EMAIL PROTECTED]
 348 Hyde Hall, Plymouth State College,          [EMAIL PROTECTED]
 MSC #29, Plymouth, NH 03264                                 603-535-2597
 184 Nashua Road, Bedford, NH 03110                          603-471-7128  



=================================================================
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
                  http://jse.stat.ncsu.edu/
=================================================================

Reply via email to