Is Two-Phase Sampling Really Better for Estimating Age Composition?
两阶段抽样真的更适合估计年龄构成吗?AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要讨论生态调查的抽样设计比较,年龄构成这一对象不足以归入所列分位数与分布效应方向。
反馈分类问题两阶段抽样真的更适合估计年龄构成吗?AI 解读 ↓
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The two-phase sampling design has been traditionally used in ecology applications to estimate age composition. With regard to both economic and statistical considerations, however, the two-phase design may yield estimates of the age composition that are no better than can be obtained using simple random sampling. This article shows that the optimality of the two-phase sampling design depends upon (a) survey objectives, (b) per-unit sampling costs, and (c) the predictive power of stratum membership on age. Methods are given for determining whether two-phase sampling yields better estimates of the age composition than simple random sampling, accounting for (a), (b), and (c).