The calculation formulas of sample size based on the error limitation are given for estimation of population mean.
对于样本均值估计总体均值，给出了基于误差限制的样本容量的计算式。
We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.
我们有几种不同的方式去定义这个概念，取决于我们指的是，样本均值还是总体均值。
This paper deals with the incomplete sample estimation of finite population mean in existing of nonrespondent sampling units.
本文讨论了存在不回答样本单位时，有限总体均值的缺损样本估计。
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。
This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.
讨论了等距抽样中，如何利用辅助信息改进总体平均值的估计，以达到提高估计精度之目的。
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。
I mean, as the population grows and there are more vehicles on the roads and there's more machinery, surely they can't depend so much on sugar cane?
我是说，随着人口增长，路上车辆更多了，机械也更多了，他们肯定不能只依赖于甘蔗（作为生物燃料）吧？
I mean take the question of East Asia: Japan, Korea, China, etc. a third of the world's population lives there, now the largest economic region in the world.
我们来谈谈东亚的问题。东亚：日本，韩国，中国等等——世界上三分之一人口住在那边，现在是全球最大的经济区域。
The growing world population could soon mean that our farms cannot produce enough meat to feed everyone, creating a market for artificial beef, pork, lamb and chicken.
很快地，不断增长的世界人口可能意味着我们的农场不能生产足够的肉类来供给每一个人，要创造一个市场卖人造牛肉、人造猪肉、人造羊肉和人造鸡肉。
They add that a wholesale commitment to its practices will mean inevitable food shortages for a world population expected to exceed 8 billion by the year 2030.
他们补充说，对这种操作方法的全面认可将意味着到2030年预计将超过80亿的世界人口必然面临粮食短缺。
Britain places a disappointing 26th, down four places from a year ago, reflecting in particular a relatively low mean number of years of schooling for its population.
英国排在令人失望的第26位，比一年前下降4位，相对应的尤其是其人口的一个相对较低的受教育时间。
The mean adherence rate in the study population was 96.3% (standard deviation, SD: 7.7).
研究人群中的平均依从率为96.3％（标准差,SD：7.7）。
"You know what I mean" is considered the biggest verbal gaffe by 15% of the population.
15%的民众认为“你知道我的意思”是最大的言语过失。
The discovery of such a large gibbon population may mean the species has a better chance of long-term survival, the scientists say.
科学家表示，发现数量如此之多的长臂猿意味着这个种群有更好的机会长时间存活。
Lack of community involvement and solid community organizations mean that the population cannot effectively interact and put pressure on service providers, the justice system and law enforcement.
社区居民缺乏参与和稳固的社区组织缺乏，意味着人们无法有效开展活动交流，也无法对服务提供者、司法系统和执法部门施加压力。
Treatments and population growth mean more people than ever are living with HIV.
治疗和人口的增长意味着比以前有更多的人与艾滋病人生活在一起。
The arrival of Lewis Turning Point and drawing close of aged society mean the traditional population dividend of China is wearing off.
刘易斯拐点的到来和老龄社会的逼近意味着中国传统的人口红利开始消退。
When biologists say that they have observed evolution, they mean that they have detected a change in the frequency of genes in a population.
当生物学家说他们观察到进化时，意思是他们发现了一个种群中基因频率的变化。
I mean because of the changing needs of the American population.
我的意思是因为美国人变化的需求。
Additional population will mean more people seeking a share of those often-limited resources.
人口增长将意味着更多的人从这些经常短缺性资源中分一杯羹。
Conformity biases result when individuals attempt to copy the mean or the mode cultural variant in the population.
当个体打算模仿群体中的中庸文化变体或时尚文化变体时，产生从众偏好。
By quantitative analysis on mean staying time and intensity of floating population in Beijing, This article puts forward corresponding policy recommendations.
本文通过对北京市流动人口的平均滞留时间和相对滞留强度的定量分析，提出有针对性的政策建议。
By quantitative analysis on mean staying time and intensity of floating population in Beijing, This article puts forward corresponding policy recommendations.
本文通过对北京市流动人口的平均滞留时间和相对滞留强度的定量分析，提出有针对性的政策建议。
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