收集索引上的详细抽样统计信息和表的分布统计信息。
Example 28. Collect detailed sampled statistics on indexes as well as distribution statistics for the table.
对近期数学学术期刊的出版周期现状做了抽样统计。
The sampling statistics of publishing period have been made for the recently published mathematical journals.
与上述方法相对应，本发明还提供一种数据包抽样统计的装置。
The present invention, corresponding to the aforesaid method, also provides a data package sampling statistics device.
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 paper has proved theoretically and verified statistically by sampling that the distribution of the position error in arbitrary direction is Rayleigh Distribution.
我们依靠计量经济学和抽样统计的方法可以预估上海民间金融的大致规模。
We rely on econometric and statistical sampling method which can be estimated roughly Shanghai's nongovernmental financial scale.
本文使用的研究方法主要有：调查法、观察法、比较法、抽样统计法、预测法等。
The methodologies employed in the thesis are: investigation, observation, comparison, sample statistics and prediction, etc.
本文采用结构化的贴体网格，来对模拟分子的运动进行定位和对碰撞对进行抽样统计。
With the structured body-fitted grids, the movement of simulate molecular is traced and the collision molecules is selected.
中国现有上百万个论坛，2.2亿个博客用户。据抽样统计，超过66%的中国网民经常在网上发表言论。
There are over 1m BBSs and some 220m bloggers in China. According to a sample survey, over 66% of Chinese netizens frequently place postings to discuss various topics.
事实上这是一个非典型的样本，不管是在抽样策略和它的组成上都是如此，而且统计管理也不能弥补这一缺陷。
This is a truly unrepresentative sample, both in sampling strategy and its make up, and statistical controls cannot compensate for this.
这句的翻译也有点偏离原文了。个人重新翻译了一遍：十年前，高等法院规定，在重新划分选举出国会议员的选区时，不能使用统计抽样。
A decade ago the Supreme Court ruled that statistical sampling could not be used when redrawing the borders of districts that elect congressmen.
可以用内部算法来比较新收集的统计信息与已保存的一组统计信息，并基于某些触发条件发出包含抽样的RUNSTATS。
An internal algorithm is used to compare newly collected statistics with a saved set of statistics, and RUNSTATS with sampling is issued based on certain conditions being triggered.
数据库质量控制和统计抽样。
在上个世纪八十年代，格罗夫斯支持使用统计抽样的方法来推算到底漏统了多少人口。
In the 1980s Mr Groves supported the use of statistical sampling to estimate how many people the census misses.
总之，统计信息的准确性取决于抽样率、数据倾斜(data skew)以及用于数据抽样的数据群集。
In summary, the accuracy of statistics depends on the sampling rate, the data skew, and data clustering for data sampling.
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。
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.
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。
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.
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。
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.
但是，如果关系数据值是高度聚集的，那么行级抽样可以产生更精确的统计信息。
But, row level sampling may produce more accurate statistics if relational data values are highly clustered.
上海市统计局开展的一项人口抽样调查显示，上海未婚人口数量正在迅速上升，尤其是未婚女性数量。
The population sampling survey, conducted by Shanghai Municipal Statistics Bureau, reveals a rapid rise in the size of the unmarried population, especially women.
收集两个索引上的详细目录统计信息，但对每个索引条目使用抽样来代替执行详细的计算。
Example 27. Collect detailed catalog statistics on both indexes, but use sampling instead of performing detailed calculations for each index entry.
第一个runstats命令为表customer和它的所有索引收集最全面、最详细的统计信息，而没有采用抽样。
The first runstats commands collects the most comprehensive and detailed statistics for the table customer and all its indexes without sampling.
在统计学术语中，这个抽样可变性说明被称为虚假设(nullhypothesis)。
In statistical terminology, this sampling variability explanation is called the null hypotheses. (the null hypothesis is designated by the symbol Ho.)
收集扩展的索引目录统计信息，指定使用抽样。
Example 38. To collect extended index catalog statistics specifying that sampling should be used.
由于随机抽样的可变性，因此这个X平方分布统计会随实验的不同而不同。
This Chi Square statistic will vary from experiment to experiment due to random sampling variability.
抽样产品，进行测试，记录数据，执行工艺操作的统计过程控制，并写入生产日志。
Sample products, perform tests, record data, carry out statistical process control on process operations, and write production logs.
运行以下工具进行统计分析：如描述性统计、测量系统的分析、假设检验、设计实验，控制理论图、验收抽样等。
Performs statistical analysis using tools such as: descriptive statistics, measurement system analysis, hypothesis testing, designed experimentation, control chart theory, acceptance sampling, etc.
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。
The included file, Distribution.php, contains methods that generate sampling-distribution statistics for several commonly used sampling distributions (Student t, Fisher f, Chi Square).
对统计抽样在审计中的意义进行概述。
This paper summarizes the significance of statistical sampling in audit.
对于需要通过抽样调查获得数据的统计指标，简要讨论抽取样本和构造估计量的方案。
As for those statistical indicators needed to use sample survey to attain data this article discusses program of drawing sample and constructing estimator simply.
对于需要通过抽样调查获得数据的统计指标，简要讨论抽取样本和构造估计量的方案。
As for those statistical indicators needed to use sample survey to attain data this article discusses program of drawing sample and constructing estimator simply.
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