Figure 5From: Estimating the size of hidden populations from register data Variability and bias of the truncated Poisson estimator. A) Coefficient of variation of Chao’s estimator as determined from simulated data for three different population sizes. B) Bias of Chao’s estimator as estimated from simulated data. The curves show sample mean divided by the nominal population size (relative bias) for three different population sizes.Back to article page