查询词典 statistic

The standard error of a statistic provides an indication of how accurate an estimate it is of the population parameter.

统计量的标准误差表示该统计量作为总体参数的估计的准确程度。

A population parameter is a constant, unchanging value estimated from a sample statistic.

母体 参数是一个持续不变的由统计样本推算出的值。

According to the quality of HT statistics, we know that the sampling structure after adjusting is relatively closed to that of population. The accuracy of the population parameter inferred through this statistic will be higher than that have not considered the influence from background.

在确定出对核心问题回答有影响的背景因素之后，我们应用Horvitz Thompson统计量对抽样调查的数据作适当调整，由Horvitz Thompson统计量的性质，我们知道经过处理后的样本结构比较接近总体结构，由该统计量推断出的总体参数的精度比不考虑背景因素影响条件下的精度更优。

In case of the noise statistic being unknown or variable ,adaptive Kalman filter is used to get drift speed of each axle at each test position ,and then drift parameter is calculated.

在噪声统计未知或时变的情况下，每个位置采用自适应卡尔曼滤波解算出平台各轴的漂移角速率，并在此基础上辨识出漂移参数。

And then it analyses the statistic attribute and power spectrum of the difference signal.

对差分信号所进行的功率谱分析表明潮汐成分得到了有效去除。

We have no global statistic data , we are not sure that we must be the earliest and only one of that predicator .

由于我们没有足够的全球性统计数据，我们无法判断我们一定是[全球最早的和唯一的正确预测2008年和2009年将爆发全球性金融危机的]。

He expresses, show according to the data of national statistic bureau, press fine industry in group, salary ......

他表示，根据国家统计局的数据显示，按细行业分组，2000年工。。。。。。

Results: They are prill or packaged. In this experiment, only one pickle was overproof. The average content of nitrite in Chinese cabbage was 1.3086 mg/kg, which is statistic-validly lower than those in others, and higher content in bulk than in bag. But there were no statistically significant deffences between then.

结果：这些腌制菜中只有一例亚硝酸盐含量超标；酸菜中亚硝酸盐平均含量为1.3086mg/kg，低于萝卜组4.5236mg/kg的平均含量，差异具有统计学意义；散装腌制菜亚硝酸盐的平均含量为3.4184mg/kg，高于袋装的平均含量2.7086mg/kg，但差异没有统计学意义。

The development situation of China from 1997 to 2000 and Beijing, Shanghai, Chongqing of 2000 with statistic data were measured by Factor Analysis and Principal Components Analysis.

结合中国网络经济发展的现状，借鉴信息化指标体系的研究思想，设计出一套涵盖网络经济五个组成方面的评价指标体系，并根据实际应用情况进行调整和修正。

Principal component related variable residuals statistic of improved PCA can be used to make further diagnosis when T~2 plot diagnoses fault but Q plot.

在Q图未检测到故障而T~2图检测到故障时，利用改进PCA方法的主元显著相关变量统计量图对工况做进一步诊断。

There are two types of gold deposits in this area, namely altered rock type and quartz vein type.

本区金矿床包括两种类型：柴胡栏子金矿床为蚀变岩型金矿；莲花山和红花沟金矿床属石英脉型。

You were home and it was two weeks ago.

你回到了家里。当时是两周前。