The reasons there are two main expressions for population and sample" is that one is biased estimator and the other is not."
“母体”与“样本”之所以有两种表达公式，是因为一个是有偏估计，另一个则不是。
These are called population measures because they refer to the whole population of possible outcomes and they measure the probabilities. It's the truth, but there are also sample means.
这种被称为人口测量学，因为他们是指整个人口可能的结果输出和测量概率，这是事实，但也有样本均值。
The study is based on a large population sample and took into account other possible factors, such as depression, season and levels of physical activity.
这项研究基于大群体样本，并且考察分析了其他可能影响的因素，如忧郁，季节和身体活动水平。
Yet if traffic figures are divided by population, a somewhat different (and more meaningful) picture emerges: South Korea is and will be the world's most data-hungry country in Cisco's sample.
然而假如流量数字以人口均分，一种有点不同的(而且更有意思的)情况出现了：以思科的样本，韩国现在是并且将成为世界上最数据荒的国家。
Yes I might have only made one or two , but structurally when I said here how many people did we sample in this population and what percentage of the population is that?
我可能只打了一两个，但是结构上当我说,有多少人我们在人群中当做样本,人群的百分比是什么？
So do you remember here that the premise point to a sample of population and the conclusion extrapolates to the rest of the population.
你们记得这里前提，指的是一个人群样本，结论假设了其他人群。
Great care was taken to try and get a representative sample of the general population.
受访人群都是经过细心挑选，能够代表大众的。
At the national level it is easy enough, though expensive, to account for this by surveying CPOs and including them in the sample in proportion to their share of the population.
尽管昂贵，但从国家水平来看，民意调查如按CPOs在总人口中所占的比例计算，调查就会很容易。
And statistical controls are unlikely to compensate for a poor sampling strategy that does not yield a sample representative of the population to which we want to generalize.
一个差劲的采样策略并不能产生一个我们需要的代表总体的样本，而统计管理不太可能弥补这一点。
What Chinese and Americans alike do not seem to realize is that they are using a poor sample to make inferences about the underlying population.
中国人和美国人看来都不了解的是，他们使用了不充分的样本而对基本人群做出推论。
However, given the small sample size and limited nature of the population studied, naturally these results should be taken with a grain of salt until replicated by other researchers.
但因研究对象范围小以及研究对象的局限性，在有其他研究者进行此研究前，对此研究结果应持谨慎态度。
Thus, because we have such a large and diverse sample size, including women from 40 sites across the nation, our results can be generalized to a healthy population.
因为我们应用了大量不同样本，包括国家的40个地区的妇女，我们的结果可以推广到健康人群。
Your test player population is not going to be random sample. It will be a self-selected sample whose average motivations and behavior will be biased.
你的测试玩家人口不是随机样本，而是特定的样本拥有相同的动机和行为也会产生偏向。
Existing socioeconomic databases were used to ensure a fair population sample. Once identified, the interviewees were telephoned and asked to complete a short questionnaire with a trained interviewer.
为了确保公平性所选择的的人群样本全部使用现有的社会经济数据库，受访者打电话有专门经过培训的工作人员询问，并且在受访期间要求填写一份简短的问卷。
Middle school students sample included two population, superior grade and inferior grade.
其中，初中生群体又包括快班和慢班两个小的被试群体。
To study the samples in minimum interval, it is beneficial to differentiate abnormal sample from population. The method can be used in appraisal and distinguish of the geological objects.
在最小标度区间内研究样品，有利于区别不属于同一母体的异常样品，这个方法适用于地质对象的评价和分类判别。
Limitations of this study include the heterogeneity of the population used and the small sample size.
这项研究的限制包括使用的群众差异性大，且样本数目较小。
Under population follow normal distribution hypothesis, designing combine median-range adaptive control charts with variable sampling interval, variable sample size and variable control limit .
在假设总体服从正态分布的条件下，设计了抽样区间，样本容量和控制限都变化的全变化参数的中位值-极差联合控制图。
Methods Random sample were obtained from the whole population by multiple stratified cluster and 1 320 objects were surveyed in their own homes by questionnaires.
方法采用多阶段整群抽样和配额抽样相结合的方法，对深圳市1 320名居民进行入户问卷调查。
This paper made empirical research on the relationship between the labor migration and urban unemployment in China according to the sample survey data of 1% population in 2005.
本文通过2005年1%人口抽样调查数据对我国劳动力流动与城市失业之间的关系进行了经验研究。
Finally, the comparison of the statistical population density and the actual population density of the selected sample counties proves the higher precision of the results.
最后选取某些样本县，在样本县内对比每个乡镇图上的人口与实际统计人口，结果表明该人口分布数据有较高的精度。
The involves the methods of design study, target population, sampling method and the techniques that were used to select the sample size.
涉及到设计方法的研究中，需要根据目标人群，抽样方法和技术来选择样本大小。
Whether the psychological construction of hardiness can be popularized in various population of China still needs more analysis of robustness and applicability in multiple-sample of cross cultural.
顽强性心理结构能否推广到我国的各类人群，尚需更多的跨文化多样本的稳健性适切性分析。
In this paper, We give the sample breakdown point of a test for moment estimation of population variance and analyze the asymptotically normal characteristic of the sample breakdown point.
本文给出了总体方差矩估计检验的样本崩溃点，并分析了该样本崩溃点的渐近正态性。
Results: The most influential parameters of sample size were susceptibility frequency of the genotype, environmental exposure factors in the population, and genetic modes.
结果：主要影响样本大小的参数为易感基因频率、环境因素暴露率、基因遗传方式，而疾病的发生率对样本量影响很小。
Distinguish between enumerative (descriptive) and analytical (inferential) studies, and distinguish between a population parameter and a sample statistic.
区分量化（描述性的）和分析（推断性的）研究的区别； 区分总体参数和样本统计量的区别。
Dynamic analysis of poplar stem borer was done with population density, crowded level and percentage of damaged trees on sample plots.
本文采用平均虫口密度、拥挤度和被害株率作为标准地的指标，对杨树蛀干害虫的危害状况作动态分析。
The simulated experimental results showed that significance t testing is highly related to population distribution effect size and sample capacities, yet rarely related to the numbers of rand…
抽样分布样本效果大小的平均值可以作为总体效果大小的估计值 ，它与样本容量和抽样样本数目有密切关系 ；
Conclusions The MSQA is successfully developed with good reliability and validity coefficient, and can be promoted in large sample population.
结论青少年亚健康多维评定问卷具有较好的信度和效度，可以在更大范围推广使用。
Conclusions The MSQA is successfully developed with good reliability and validity coefficient, and can be promoted in large sample population.
结论青少年亚健康多维评定问卷具有较好的信度和效度，可以在更大范围推广使用。
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