In article <[EMAIL PROTECTED]>,
Donald Burrill <[EMAIL PROTECTED]> wrote:
>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 be? Usually the question of
>interest is whether it's close enough to be an adequate approximation for
>guv'mint work.
> -- DFB.
I do not see that this is irrelevant, provided that
reasonably robust procedures are used, with REASONABLE
assumptions satisfied. Linearity might be important,
but unless there is truncation, normality is usually
quite unimportant.
--
This address is for information only. I do not claim that these views
are those of the Statistics Department or of Purdue University.
Herman Rubin, Dept. of Statistics, Purdue Univ., West Lafayette IN47907-1399
[EMAIL PROTECTED] Phone: (765)494-6054 FAX: (765)494-0558
=================================================================
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
http://jse.stat.ncsu.edu/
=================================================================
