IN ecological work it is often necessary to have comparative estimates of the numbers of organisms in a large number of samples. An exact valuation may not be required, but an approximate numerical ...

This paper presents the results of a study with two main objectives: (1) to investigate an extension of some principles recently developed in the theory of cluster sampling, and (2) to determine the ...

A recent study published in the PLOS One journal estimated the number of symptomatic coronavirus disease 2019 (COVID-19) breakthrough infections in vaccinated individuals in the US. Study: Estimating ...

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