查询词典 sampling

Methods According to the classification of east, middle and west areas in China, as well as urban and rural, the multi-stage cluster probability sampling was used to select randomly total 17607 children under 5 years, whose weight and height were measured in standard method.

方法采用多阶段分层整群随机抽样的方法，按照东、中、西三类地区和城市、农村的分层原则，在全国选取17607名5岁以下儿童，测量儿童的身高和体重。

In probability sampling, a statement of the likelihood that a range of values i.e.

Confidence level：置信度在随机抽样中，它代表了一组数值成为真实人口数值的可能性。

The SRGS method takes the system capacity as an important parameter to adjust the sampling probability.

该方法将监测系统处理能力作为采样概率调节的一个重要参数。

The quantitative analysis of the input parameters can be done by probability random sampling deduction method for the leaking source of pipeline gas.

采用随机抽样推断法对管道煤气泄漏源的输入参数的不确定性问题进行定量的分析，并且讨论了泄漏时间的不定性与确定泄漏源强度的关系，提出了管道气体泄漏时间估算方法。

Content includes probability, statistical distribution, sampling, estimation, hypothesis testing, regression, multiple regression, and random process.

主要内容包括：概率、统计分布、抽样、估计，假设检验、回归、多元回归和随机过程等。

Genetic algorithm optimization process can be seen as algorithms in the process of constant cycle of viable domain random, using the results of previous sampling probability distribution on the target point estimates, and then based on an estimate of the projected distribution of a sample point.

遗传算法优化的过程，可以看作算法在循环过程中不断对可行域进行随机抽样，利用前面抽样的结果对目标点的概率分布进行估计，然后根据估计出的分布推算下一次的抽样点。

Methods Proportional probability sampling method was used to randomly sample 1 200 pupils from 30 counties in Henan Province.

方法采用人121比例概率抽样法分阶段抽样。

This course is a self-contained introduction to statistics with economic applications. Elements of probability theory, sampling theory, statistical estimation, regression analysis, and hypothesis testing.

这是一门独立的统计学导读课程，适用于经济学，要点包括概率论，抽样理论，统计估计，回归分析和假设检验。

The content includes: sources, collection and tabulation of data, description of characteristic of data distribution, probability, sampling method, regression and correlation, hypothesis testing, time series and index number.

主要内容包括：统计数据的收集与整理，数据分布特征的描述，抽样的基本理论与方法，相关分析与回归分析，假设检验的基本理论与方法，时间数列分析，统计指数。

The first CATI system was developed in America, in the middle of 70's. They used CATI to help them to design survey, and to perform the probability sampling.

CATI系统发展最早在美国，约从1970年代中期开始，他们将统计中的机率抽样以电脑程式表现，藉以提高调查回收率。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。