英语词汇sample mean estimator怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	sample mean estimator
释义	sample mean estimator 简明释义样本平均估计器网络释义 1 ?样本平均估计器 ... 样本均值 sample mean 样本平均估计器 sample mean estimator 样本均方应急 sample mean square contingency ... 双语例句 1 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. 讨论多阶段抽样比率估计及其样本量选择的问题，给出了比率估计抽样均方误差的近似公式及其渐近无偏估计的公式。
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