因此，获得最佳计划的准确性完全取决于关于查询中所涉及的数据库对象的最新统计信息。
So, the accuracy of getting an optimal plan is entirely dependant on the up-to-date statistical information about the database objects involved in the query.
他又说：“但是环保部需要经费来采购监测仪器和培训人员，以确保统计数据的准确性。”
But the ministry needs money to buy monitoring machines and train staff members to make sure its statistics are accurate, he said.
现代遗传学之父孟德尔的实验结果也受到了现代统计学对其准确性的质疑。
The results of Gregor Mendel, the father of modern genetics, are also suspiciously over-accurate by the tenets of modern statistics.
当查询性能中出现例外情况时，优化指南和统计视图特性对于弥补访问计划估计的不准确性非常有用。
Optimization guidelines and statistical views are useful features to compensate the access plan evaluations when exceptions in query performance occur.
首都的房地产数目影响了全国统计数据的准确性。
The capital's property Numbers skew national housing statistics.
IEA今晚表示，石油峰值论的批评人士常常错误地怀疑IEA统计数据的准确性。
The IEA said tonight that peak oil critics had often wrongly questioned the accuracy of its figures.
这些公司怎样保证基因分型结果的准确性？又怎样保证风险预测的结果建立在实实在在的遗传和流行病学统计数据上？
How do the companies ensure that their genotyping is accurate and their risk predictions are based on solid genetic and epidemiological statistics?
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.
优化器的行为受三个关键因素的影响：Informix配置文件中OPTCOMPIND参数的值、查询命令和内部统计数据的准确性。
The behavior of the optimizer is influenced by three key factors: the value of OPTCOMPIND parameter in the Informix configuration file, query directives, and the accuracy of internal statistics.
本文对于提高电力统计数据质量真实性及准确性的相关问题进行了分析与探讨。
This paper analyzes and discusses the measures to improve the authenticity and accuracy of the electric power statistical data.
而电力统计数据的真实性与准确性，是实现正常运行保证电力企业自身效益的重要基础。
While the authenticity and accuracy of statistical data is the important basis to realize the normal operation and to ensure the electric power enterprise's own benefit.
统计实时组织弹性成像评分及超声bi -RADS分级法检出乳腺癌的敏感性，特异性及准确性。
Statistical real-time tissue elastography score and ultrasound BI-RADS classification method were for breast cancer detection sensitivity, specificity and accuracy.
输入电脑的资料，存档登记资料和有关预订的统计资料必须有较高的准确性。
All computer input, manual filing procedures and statistical information relevant to reservations must be of high quality.
输入电脑的资料，日常登记资料和有关预订的统计资料必须有较高的准确性。
All computer input, manual filing procedures and statistical information relevant to reservations must be of high quality.
环形线圈车辆检测器的计数精度和测速精度关系到交通流量统计结果的准确性，是计量检定的关键项目。
The precision of count and speed test of inductive loop vehicle detector relates the veracity of traffic flux statistical result, which is verifiable key item.
采用机理分析和统计分析的方法，建立了二次风系统非线性动态模型，并通过仿真验证了模型的有效性和准确性。
Utilizing mechanism analyzing and statistical analyzing methods, a dynamic model of secondary air systems has been constructed and its effectiveness and accuracy validated by simulation.
提出一个统计模型，用于检验试题库中由专家给出试题难度这一指标的准确性。
The statistical model is put forward to test the accuracy of item difficulty indexes in the test papers given by the educational experts.
为了验证模型的有效性和准确性，本文采用了统计检验和模型预测与实测数据对比两种检验方法。
The validity and accuracy of proposed models were tested by using the statistical test methods and by comparing the model estimation with the field observed data.
由于应用了逐单统计技术，相对于老的龙虎看盘准确性大大提高。
Due to the application of statistical techniques-by-one, as opposed to the old dragon and tiger Kanpan accuracy greatly enhanced.
目的提高病案首页信息质量，保证医院统计报表的准确性。
Objective To ensure the veracity of hospital statistic forms by enhancing information credibility in the Front sheet of the medical record.
如何准确地计算价格指数成为困扰各国统计机构的一个难题，而质量调整是目前影响价格指数准确性的重要因素之一。
It is rather a difficult issue for statistical agencies how to estimate price index accurately, while quality adjustment is one of those factors which influence the accuracy.
用数理统计方法改进了邻菲啰啉分光光度法测定铁的条件试验和标准曲线，有效地提高了分析结果的准确性。
The conditional test to measure iron by means of O-phenanthroline spectrophotometry and the standard curve are improved with mathematical statistics.
目的：为了减少疾病诊断在病案首页中的问题，提高国际疾病分类和统计工作的准确性。
Objective To reduce the problems of disease diagnosis on the first pages of medical records and improve the accuracy of international classification of diseases and statistics.
在设计的过程中，更加注重了系统计费的准确性和运行的高效性。
In the process of design, it is emphasized the veracity of calculating the expense and running efficiency.
提高了统计数据的准确性、及时性、为各部门主管领导决策提供可靠依据。
It can also provide leaders with reliable information, which is more accurate and comprehensive than before.
各地方、各部门、各单位应当健全统计资料的审核制度，保障统计资料的准确性和及时性。
All localities, departments and units shall amplify the system of examination and verification of statistical data and guarantee the accuracy and promptness of statistical data.
结果该分析系统具有良好的重复性和准确性，计数结果与尿沉渣定量计数板法比较在统计学上无显著性差异（P>0。05）。
Results The Upside-down microscopy analyzing system has satisfactory accuracy and precision, and there were no significant differences between the two results(P>0. 05).
与机理法和统计法相比，钢水温度预报的适应性和准确性都得到了显著提高。
Comparing with previous methods, the adaptation and accuracy of the steel temperature prediction have been improved.
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。
The standard deviation of a sampling distribution. It is the statistic used to make statements about the accuracy of estimates based on sample information.
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