sample mean estimator
常见例句
- We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.
討論多堦段抽樣比率估計及其樣本量選擇的問題 ，給出了比率估計抽樣均方誤差的近似公式及其漸近無偏估計的公式 。 返回 sample mean estimator