Alain Zuur's response to a recent posting raises an interesting question. To
use a random effects model what number

of groups is actually sufficient?

 

I have heard talk of a minimum of 20 groups but have seen numerous examples
in books and published papers with

much less than this. Is there a definitive reference on this?

 

 

 

 

Kind regards

 

 

 

 

Dr Graham Leask

Economics & Strategy Department

Aston Business School

Aston University

Aston Triangle

Aston Street

Birmingham

West Midlands

B4 7ET

 

Tel: 0044 121 204 3150

 


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