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2010 Oct 07
2
How do I set the dispersion parameter in poisson glm?
...sson,
offset(log(area)),
data=tallPSME.df)
I want to fix the dispersion parameter at 2.5. How can I do this, please?
Many thanks in advance for your help,
Manuela
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Manuela Huso
Consulting Statistician
201H Richardson Hall
Department of Forest Ecosystems and Society
Oregon State University
Corvallis, OR 97331
ph: 541-737-6232
fx: 541-737-1393
2010 Sep 28
4
drawing samples based on a matching variable
Hi, everyone. I have what I hope will be a simple coding question. It seems
this is a common job, but so far I've had trouble finding the answer in
searches.
I have two matrices (x and y) with a different number of observations in
each. I need to draw a random sample without replacement of observations
from x, and then, using a matching variable, draw a sample of equal size
from y. It is the