The third command samples 15% of all rows, does not collect distribution statistics, and also applies sampling to indexes which the first and second commands didn't.
第三个命令抽取 15%的行，但是不收集分布统计信息，并对索引也应用了抽样，这不同于第一个命令和第二个命令。
SQS USES message sampling based on weighted random distribution, and it returns messages only from the sampled subset of servers when you query for messages.
SQS使用基于加权随机分布的消息取样，在查询消息时，它只从取样的一部分服务器返回消息。
Most statisticians would not argue if you decided to reject the null hypothesis that the results can be accounted for in terms of random sampling variability from the null distribution.
如果您决定排除虚假设—结果可以按照零分布的随机抽样可变性获得，那么大多数统计师都不会有争议。
The simulation is categorized as a sampling method because the inputs are randomly generated from a probability distribution that stands in for a real data population.
模拟是按照采样方法分类的，因为输入是根据代表真实数据总体的概率分布而随机生成的。
To find the sampling distribution of the Chi Square statistic, simply take the outcome of each experiment and compute a Chi Square statistic for that result.
为了找到X平方分布统计的抽样分布，只需获取每次实验的结果，并且计算该结果的x平方分布统计。
Finally, I demonstrated how to simulate the Chi Square sampling distribution for different degrees of freedom, going beyond simply commenting on its derivation.
最后，我演示了如何模拟不同自由度的x平方分布的抽样分布，而不只是仅说明其来源。
To find this probability, you need to understand what the sampling distribution for Chi Square looks like.
要得出这一概率，需要理解X平方分布的抽样分布是什么样的。
Look at the Chi Square sampling distribution.
观察x平方分布的抽样分布。
This setting is used to find the location (or critical value) on the Chi Square sampling distribution that includes a tail area equal to the alpha-cutoff value (0.05).
该设置用于查找 X平方分布的抽样分布中包含尾数区域等于alpha 断开值（0.05）的位置（或临界值）。
This is why the shape of the Chi Square sampling distribution changes for different df values.
这就是为什么X平方分布的抽样分布的形状随着df值的不同而变化的原因。
Sampling order and mental resource distribution during the sampling processing of the facial figures.
人脸部图形取样序和取样中心理资源分配的研究。
The included file, Distribution.php, contains methods that generate sampling-distribution statistics for several commonly used sampling distributions (Student t, Fisher f, Chi Square).
所包含的文件Distribution . php包含了为几个常用的抽样分布(t分布、f分布和X平方分布)生成抽样分布统计信息的方法。
Method Distribution of Escherichia Coli was learned by spot sampling.
方法采用病房现场采样，了解大肠埃希菌的分布。
The inspecting value of sample for asphalt content sampling of asphalt mix is normal distribution.
沥青混合料沥青含量抽样检测的样本检测值服从正态分布。
Based on the measurement of flow field, the particle concentration distribution in the PDC type cyclone tube was studied by isokinetic sampling method.
在流场测试的基础上，采用等动采样的原理，对PD C型旋风管内的颗粒浓度分布进行了全面系统地测试。
Given the observed hydrological data, the model can estimate the posterior probability distribution of each location of change-point by using the Monte Carlo Markov Chain (MCMC) sampling method.
该模型的核心部分是根据观测到的资料，通过蒙特卡洛马尔科夫链随机抽样的方法来估计变点位置的后验概率分布。
The geographic environment, sampling, analytical method, distribution state of all data for different soils and crops, and difference between districts were discussed.
对北京的环境地理、采样、分析测定、土壤和作物测定的分布类型和区域间的差异性进行了探讨。
The use of photosensitive array makes it possible to obtain the distribution of diffracted light intensity with only one sampling.
由于本实验仪的光强采样部分使用了光敏阵列，从而一次采样即可得到衍射光强分布图形。
This paper adopted the soil distribution area, sampling data and soil organic content from the first soil general survey and applied the technique of GIS to estimate soil carbon reservior in China.
根据中国第一次土壤普查得到的土壤各类型分布面积、采样数据、土壤有机质含量，运用GIS技术，来估算土壤碳库。
The method is proposed on the premise of satisfying the demand of basic information, which can optimize the distribution of available sampling passages.
以及在满足基本信息采集要求的前提下，对可供采用的信息采集通道进行优化分配的方法。
The normalized distribution functions of the variables and their sampling methods are given.
给出变量的归一化分布函数及由此进行随机抽样的方法。
The thesis chooses the reasonable sampling site according to the different distribution of Phragmite australis, and combing the simulation experiment.
本文根据芦苇在不同湿地生境的分布，合理选择采样点，做实验室模拟实验。
Sampling designing based on spatial distribution and variability of soil properties is an important issue in recent studies on soil sampling.
利用土壤空间变异特性和空间分布特征进行采样设计是当前土壤采样研究的重要内容。
A single Gaussian distribution is obtained to approximate the posterior distribution of state parameters based on sequential importance sampling and Monte Carlo methods.
通过基于重要性采样和蒙特卡罗模拟方法得到一高斯分布来近似未知状态变量的后验分布。
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。
In this paper, the normal distribution method is improved as it presents directly the sampling plan by adding calculation before test and completely removing after - test calculation.
文中改进了测试性验证中的正态分布法，通过添加试验前计算，完全消除试验后计算，直接给出抽样方案。
The optimum sampling number, the sequential sampling application and the sampling method at different densities were determined based on the characteristics of the larva's distribution.
根据竹螟幼虫分布的特点，确定了不同密度下的最适抽样数、序贯抽样的应用和调查取样方法。
The paper has proved theoretically and verified statistically by sampling that the distribution of the position error in arbitrary direction is Rayleigh Distribution.
本文从理论上证明并抽样统计验证了任意方向位置度误差服从瑞利分布；
The standard deviation of a sampling distribution. It is the statistic used to make statements about the accuracy of estimates based on sample information.
抽样分布的标准偏差。统计学上用来说明从样本预测的数据的准确性。
The standard deviation of a sampling distribution. It is the statistic used to make statements about the accuracy of estimates based on sample information.
抽样分布的标准偏差。统计学上用来说明从样本预测的数据的准确性。
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