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This data set consists of counts of anuran larvae as a function of pond type, pond perimeter, and presence of water scorpions (Ranatra sp.).
data(min.trap)
A data frame with 24 observations on the following 6 variables.
Type
pond type, denotes the location of ponds in either bog or upland environment
Num_anura
number of anuran larvae in minnow traps
Effort
number of trap nights (i.e., number of traps x days of trapping) in each pond
Perimeter
pond perimeter in meters
Num_ranatra
number of water scorpions trapped in minnow traps
log.Perimeter
natural log of perimeter
Mazerolle (2006) uses this data set to illustrate model selection for Poisson regression with low overdispersion.
data(min.trap) ## maybe str(min.trap) ; plot(min.trap) ...
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