查询词典 sampling error

All phase IDCT interpolation filter was a pure 2-D filter which could convert between quincunx sampling grid and square sampling grid directly, while all phase extended DCT interpolation filter could restrain the Gibbs effect of FIR filters.

其中全相位IDCT内插滤波器是纯二维滤波器，且能够直接实现五点梅花形采样矩阵与矩形采样矩阵之间的转换。

Having established the representativeness of the sample through quota sampling and random sampling, the study yielded a total of 1,911 valid adult samples from different locations in mainland China and Hong Kong.

依照民族主义的内涵，国族认同指的是族群成员所认同的唯一适当的、具合法性的国家，应是政治与族群疆界取得一致。

Based on the mutual fund market share of companies in the investment trust industry, quota sampling method was adopted to determine the sample size. The questionnaire survey was conducted with the convenience sampling method, using electronic questionnaires to collect primary data. A total of 423 questionnaires were distributed and 400 effective questionnaires were collected, comprising the effective return rate of 94.56%.

根据投信公司的基金规模市场占有率，采用配额抽样法分配抽样之样本数，每一投信公司依分配之样本数以便利抽样法选取受访者，以电子问卷作为搜集初级资料的工具，共计发出问卷423份，回收有效问卷400份，有效回收率为94.56%。

The questionnaire method and the interview menthod were used to gain the tourist data, the quota sampling method was used in sampling survey, the principal component analysis method was used to measure the various variables, the statistical methods such as linear regression analysis, multivariate linear regression analysis, single factor variance analysis and logistic regression analysis were used to analyzes the relationship between various variables.

具体来说，在获取游客数据时采用了问卷调查法和访谈法，在抽样调查时采用了配额抽样方法；对各变量进行测度时使用了主成分分析法；在分析各变量之间相互关系时采用一元线性回归分析、多元线性回归分析、单因素方差分析及Logistic回归分析等统计方法。

Eight hierarchical clustering methods including single linkage method, complete linkage method, median linkage method, centroid method, unweighted pair-group average method, Wards method, flexible-beta method and weighted pair-group average method were combined with three sampling strategies, random, preferred and deviation sampling to develop 24-core collections.

川最短距离法、最长距离法、中间距离法、重心法、不加权类平均法、离差平方和法、可变法和加权配对算术平均法等8种系统聚类方法，结合随机取样法、优先取样法和变异度取样法等3种取样方法，发展了24个水稻核心种质库。

The method of sampling took Stratified Random Sampling. There are 240 valid questionnaires in 300, sum up to 80%.

本研究采取分层随机抽样法，共发放问卷300份，得有效问卷240份，有效问卷率为80%。

Based on the proportion estimate and the mean estimate in sampling technology,the authors of this paper put forward the method of ratio estimator in sampling technology and makes a detailed analysis of method.

在抽样技术比例估计与均值估计的基础上，提出了抽样技术的比率估计法，并对其作了详细的分析，同时，通过具体问题的讨论，说明了比率估计法所具有的优越性；针对各个样本比值有比较大的差别时所产生的不稳定性，运用聚类分析的方法提出了具体的比率估计法的改进公式，减少了噪声数据的影响，得到了较高的准确度。

Simple random sampling, two-phase sampling, auxiliary information, ratio estimator

| 简单随机抽样；二相抽样；辅助信息；比估计

RDS is a flexible and versatile sampling, which is fit for sampling hidden populations.

同伴推动抽样是一种灵活的、应用广泛的抽样方法，适合应用于隐蔽人群的抽样研究。

By the comparison of the variances in the whole process of analysis (the overall variance, the sampling variance and the sample analysis variance), a new concept named Critical Sampling Mass for well mixed bulk materials was presented, and the relative equation for calculating the CSM was derived.

通过对分析全过程中各个步骤的方差的统计分析，提出了临界取样量的概念和计算公式，探讨了取样的代表性问题，该项研究为客观上分析总方差所能达到的水平提供了理论依据。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样