摘要
本文通过对不同抽样方法下抽样方差计算公式的导出与比较,认为抽样中应采用何种抽样方法取决于两个参数异方差测度r和回归截距项α,并提出了这两个参数的事前估算方法。
By the derivations and comparisons of Sampling Variance formulas under the different Sampling Methods,it is proposed that Sampling Method depend upon two parameters:heteroskedasticity r and intercept α. The solution to r and α is also put forward in this article.
出处
《数量经济技术经济研究》
CSSCI
北大核心
2005年第4期60-66,共7页
Journal of Quantitative & Technological Economics
关键词
概率抽样
抽样方差
无偏估计
Probability Sampling
Sampling Variance
Unbiased Estimator
