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1·The paper proposes new separate ratio estimators for population mean using known skewness coefficient of auxiliary variable in stratified random sampling.

本文在分层随机抽样下通过使用辅助变量的偏斜系数提出了几个总体均值的估计。

2·We need to calculate the coefficient of skewness to measure the degree of deflection.

我们需要计算偏度系数来衡量偏转的程度。