Figure 2

Variability and bias of the estimator. A) Coefficient of variation (CV) of population size estimator as estimated from simulated data for four different population sizes. The dotted line indicates a CV of 0.3 which might represent an acceptable level of variability in practice. B) Bias of population size estimator as estimated from simulated data. The curves show sample mean divided by the nominal population size (relative bias) for four different population sizes.