网络释义
统计学基础笔记(一) ... 九、统计：样本和总体（Sample and Population） 十、统计：总体方差（Variance of population） 十、统计：样本方差（Variance of sample） ...
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variance of population mean estimator 母体
estimation of population variance 总体方差的估计
unbiased estimate of population variance 总体变异无偏估计 ; 总体方差无偏估计
双语例句原声例句
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Trends in the dispersal of the vole were consistent to the variance of population density and recruitment in the voles.
东方田鼠扩散的趋势与其种群密度及补充量的变动一致。
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The first chapter has discussed alteration of geographical environment, variance of population, transformation of structure of districts, evolvement of city form in Macau from historic point of view.
第一章从历史的角度论述了澳门地理环境的变迁、人口规模的变动、区域结构的演化、城市形态的演化等。
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It is of significance in practice to analysis the variance law and trend of Wenzhou population structure and understand the severe situation that the social security system environment.
认真分析温州人口结构变化的规律与趋势，深刻认识社会保障制度所面临的严峻形势，对于加快完善温州社会保障制度具有重大的现实意义。
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They divide by n-1 to make it an unbiased estimator of the population variance, but I'm just going to show it in a simple way here.
当除以n-1表示的是对总体的,无偏估计,我在这里只是说的简单一点
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