recapr (version 0.4.3)

NPetersen: Petersen Estimator

Description

Calculates the value of the Petersen estimator for abundance in a mark-recapture experiment, with given values of sample sizes and number of recaptures. The Petersen estimator is the MLE, but is typically outperformed by the Chapman estimator.

Usage

NPetersen(n1, n2, m2)

Arguments

n1

Number of individuals captured and marked in the first sample. This may be a single number or vector of values.

n2

Number of individuals captured in the second sample. This may be a single number or vector of values.

m2

Number of marked individuals recaptured in the second sample. This may be a single number or vector of values.

Value

The value of the Petersen estimator, calculated as n1*n2/m2

See Also

NChapman, NBailey, vPetersen, sePetersen, rPetersen, pPetersen, powPetersen, ciPetersen

Examples

# NOT RUN {
NPetersen(n1=100, n2=100, m2=20)
# }