[R-sig-eco] Inference, logistic regression

[David Hewitt]

Slightly OT... can you be sure that absences were true absences, or is it
possible they were there and you missed them?



> I'm working with a simple logistic regression model comparing the  
> presence/absence of an insect species against an index of plant  
> species turnover:
> 


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David Hewitt
Research Fishery Biologist
USGS Klamath Falls Field Station (USA)
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