焦虑
发表于 2025-3-28 17:36:00
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BADGE
发表于 2025-3-28 22:33:20
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恃强凌弱的人
发表于 2025-3-29 00:17:36
Simple Random Sampling, inferences about the population, a procedure that provides a precise estimator of the parameter of interest is desirable. Many sampling schemes have been developed to achieve this objective. To begin with, simple random sampling, the simplest and the most basic sample selection procedure, is discussed.
旧式步枪
发表于 2025-3-29 05:26:56
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Dislocation
发表于 2025-3-29 10:35:56
Sampling from Mobile Populations,ion, natural selection, evolution, maintenance of many ., and so on. Unlike other populations considered in previous chapters, the sampling units in the wildlife populations do not remain fixed at one place. They are rather highly mobile. Therefore, for mobile populations, it is essential to use alternative approach for sampling and estimation.
G-spot
发表于 2025-3-29 11:33:27
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搬运工
发表于 2025-3-29 17:59:46
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不透气
发表于 2025-3-29 20:40:25
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荣幸
发表于 2025-3-30 00:07:57
https://doi.org/10.1007/978-3-7643-8190-5ple. However, when the units vary considerably in size, SRS does not seem to be an appropriate procedure, since it does not take into account the possible importance of the size of the unit. Under such circumstances, selection of units with unequal probabilities may provide more efficient estimators
CYN
发表于 2025-3-30 06:53:17
https://doi.org/10.1007/3-540-28854-6Therefore, apart from increasing the sample size, another possible way to increase the precision of the estimate could be to divide the population units into certain number of groups, such that the variability within the groups is minimum whereas it is maximum between the groups. Smaller samples cou