sample size的例句大全

In this paper, we concretely design a fixed-width confidence interval for the variance σ 2 of a normal distribution N(μ,σ 2) by two-stage procedures and provide the optimal sample size of the first stage by numerical computations.

利用两阶段抽样，我们具体给出了正态总体方差的一个置信区间，它同时满足可靠度与精度，利用数值计算的方法，我们计算出第一阶段的最优抽样量。

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A Study to the Confidence Region of Multinomial Distribution on the Condition of Large Sample Size

大样本条件下多项分布未知参数置信域的研究

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GeneU's technology is shinier, and it offers more options for customization, but skin-aging studies with many ingredients ( like antioxidants) have mostly not been well-controlled for specific formulation and dose, adequate sample size or randomized design, so it's not known for sure if they work.

GeneU的技术更引人注目，提供更多个性化选择，但是由于对很多成分（比如抗氧化剂）在皮肤老化中作用的研究大多没有对具体的配方和剂量进行很好的控制，样本数量不够，设计比较随意，所以不能确定这些成分是否有效果。

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Results Actual use of the method for estimating sample size and the relationship between effect factors and sample size were illustrated by a example of case control family study of liver cancer.

结果用实例说明了病例对照家系设计中样本含量估计方法的应用与影响因素和样本含量的关系。

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A test statistic is proposed and its asymptotic null distribution is also given, as both the sample size and the number of variables go to infinity.

我们将给出一个新的检验统计量，并且，在样本量和维数一起趋于无穷的情形下，给出该统计量在原假设成立下的渐近分布。

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Sample Size and Power Determination for Interval Test in Clinical Trial

临床试验中区间检验的样本量与检验效能估计

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Using simulation result as a substitute for data of test sampling, obtains the relation between sample size and sum of buildings, and it would be helpful to calculation of sample size.

利用模拟结果代替试验抽样数据，得到了样本容量与建筑总量的变化关系，为样本容量的计算提供了帮助。

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Influence of Cultivation Practice and Sample Size on Water Loss of Excised-leaf in Winter Wheat

栽培措施和样本大小对冬小麦离体叶片失水的影响

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The examples show how to have a accordant test in internal control system by means of fixed sample size sampling, which provides basis, for the application of material test to determine the scope, emphasis, quantity and method of examing.

举例说明了运用固定样本容量抽样对内部控制制度进行的符合性测试，为实质性测试确定审查的范围、重点、数量和方法提供了依据。

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Because guidance ammunition is expensive and the destructibility is inevitable in the testing, the sample size is small.

由于弹药的高价值以及试验的破坏性，使得只能进行小样本试验。

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Because the differences of testing methods, sample size, laboratory conditions, measurement targets and standard of definition, the prevalence of clopidogrel resistance is variability.

由于采用的方法、样本量大小、实验室条件、检测指标、定义的标准等不同，氯吡格雷抵抗的发生率也有很大差异。

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The theoretical sample size was about 820 and positively relative to infection rate.

理论抽样数量约820株。

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What more, the test statistics are more effective with the increase of spatial correlation and sample size.

此外，随着空间相关性和样本量的增大，各检验统计量更为有效。

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Influence of Tensile Sample Size and Deformation at Length Direction on r-Value Measurement

拉伸试样尺寸与长度方向变形量对r值测量的影响

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TESTING Sample Size Estimates for the Experiments of Fruit Trees

果树试验中的样本容量估计

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On the Estimation of Sample Size and Censoring Time Sample Test

可靠性试验样本量和截尾时间的计算

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Determination of testing sample size is occupied a critical position in the scientific study and product development.

试验样本容量的选择在科学研究及产品开发中占有十分重要的地位。

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The correlation degrees between subjects in multi-subject sampling survey are discussed in three cases, in view of every condition, the relevant sample orgainzation and the calculating methods of target variable, sample size and sample error are put forward in this thesis.

本文将多主题抽样调查中各主题间的相关程度分成三类进行了讨论，针对每一种情况，提出了相应的抽样组织形式，目标量的估计方法，抽样单位数和抽样误差的控制方法。

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Because this method can make full use of prior information about unknown parameter, it can reduce the demand for field testing sample size.

由于该方法充分利用了验前获得的关于总体分布未知参数的信息，因而减小了对现场试验子样的需求。

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A Dissection for the Sample Size in the Study of Range of Normal Values in Medicine

医学正常值研究中所用样本含量的剖析

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