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gratts
12-03-2011, 02:50 PM
Hi guys..could do with a bit of help on some stats..
I've observed 4 species of birds and recorded probes into sediment within a 2 minute period and the number of these probes that were successful (i.e when prey was caught). So I have approximately 40 odd data for each bird species, with numbers of probes and number of prey capture for each individual.
My hypothesis is that the larger birds have a slower probe rate (less per 2 minute period) than the smaller species..

Could anyone suggest which statistical method would be most suitable/effective because I'm a bit stumped!

Cheers :)

ledzep
12-03-2011, 03:03 PM
So I have approximately 40 odd data for each bird species, with numbers of probes and number of prey capture for each individual.

You've got count data here. So, the natural statistical technique to analyse such data is to use Poisson Regression Models.

gratts
12-03-2011, 03:24 PM
Cheers led..not a technique I've come across but will take a look at it! :)
Our teacher suggested ANOVA, but I'm not exactly sure how this would be implemented/how effective it would be?

ledzep
12-03-2011, 03:34 PM
My hypothesis is that the larger birds have a slower probe rate (less per 2 minute period) than the smaller species..

One thing you've to do is, how would you define bird as being large and small?