摘要
在PPS抽样中,为了满足对K个组(一级抽样单位)以(P1,…,PK)为组入样概率进行抽样的要求,往往采用有放回抽样,或每次抽样后调整下一次再抽样时的组的入样概率.前者会产生重复抽样,后者比较复杂,在实际应用中有时甚是不可能实现的.本文根据PPS抽样中,对抽组的入样概率的要求,提出一种二阶混合抽样,可以克服上述问题,并简单易行.
In PPS sampling, to satisfy the sampling request for K clusters (first sampling unit) with (P_1,…,P_K) as sampled probability, it is realized, usually in two ways, using sampling with replacement or adjusting previous cluster sampled probability in next sampling. The former would lead to repeated samples, the later sometimes fails for its complication. To solve the above problem, this paper provides a new method: two-stage mixable sampling which is simple and feasible.$$$$
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
2004年第4期42-47,63,共7页
Acta Scientiarum Naturalium Universitatis Nankaiensis
关键词
PPS抽样
二阶抽样
最终抽样单位
估计量
均方误差
样本额
PPS sampling
two-stage sampling
final sampling unit
estimator mean square error
sample size
