Confronti fra stimatori per la media nel campionamento per centri

F. Mecatti & S. Migliorati
The center sampling technique is well suited when a population is naturally gathered in overlapping groups of units for which the units can not be labeled and the group size as well as the population size are unknown. An unbiased estimator Ym for the mean of a quantitative characteristic of interest has been proposed under the simple hypotheses that the relative weight of each center is known. A second estimator Yc can be deduced from...