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Re: st: MANOVA to verify difference


From   Damiano Bordogna <damiano.bordogna@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: MANOVA to verify difference
Date   Wed, 21 Sep 2011 18:18:13 +0200

Thank you Ronan,

i'll try to introduce you my problem!

My database is made of
- 57 observation (divided into 6 groups of respondant), representing
firm's stakeholders (iROWS)
- 11 binary variables, representing stakeholders' objectives (COL)
- 4 normal (not descrete) variables, representing stakeholders' salience (COL)

I want to verify if there are differences between the different groups
according to the choosed objectives (VERY IMPORTANT: as said before,
objectives are dummy variables, 0-1).

Thank you again Ronan!

2011/9/21 Ronan Conroy <rconroy@rcsi.ie>:
> On 2011 MFómh 21, at 14:36, Damiano Bordogna wrote:
>
>> Is it possible, with MANOVA, to verify if there's some kind of
>> difference between different goups of observation?
>
> That is the kind of question that doesn't get you very far. Can you explain what you are trying to do?
>
> Many statistical procedures examine difference of some kind between groups of observations. And no statistical procedure can verify that there is a difference. All you can do is see how well the observed differences are explained by chance, and, more important, see if the observed effect sizes are of any real life importance.
>
> Tell us a little more about your problem, then!
>
>
> Ronán Conroy
> rconroy@rcsi.ie
> Associate Professor
> Division of Population Health Sciences
> Royal College of Surgeons in Ireland
> Beaux Lane House
> Dublin 2
>
>
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