查询词典 variance

E.g. if we know that a distribution is normal with variance 1 but has an unknown mean, the sample average is a sufficient statistic for the mean.

比如，你想判断一个人的性格，你可以问他或她是什么星座的，给定星座的情况下，你对他/她性格的"分布"会有一个估计。

Besides, the sample mean, variance and correlation characteristics were studied.

实验表明，各高频子图象系数近似服从r=0.4的广义高斯分布。

Demonstrate an understanding of type I and type II errors as they relate to sample size and variance.

须了解何谓型一及型二误差，以及样本大小及变对其之影响。

We promise an unconditional taking back if there is any quality variance between the sample and the dispatch.

万一样品的质量与发货的质量不符，我们会保证无条件退货。

You are using sample variance measurements to monitor the results of the process over time Which tool and technique of Perform Quality Control are you using?

你正在使用采样的方式随时来监控生产过程的偏差。你会使用下列哪个质量控制的工具？

In this paper two methods of calculating the variance of the sample's spatial means are used to study the influence of the self-correlation distance on the variation of the coefficient of consolidation.

采用空间均值的方差的两种算法分析了自相关距离对固结系数的变异性的影响。结果表明，随着自相关距离的增大，固结系数的变异性增大。

Descriptive statistics, single sample t-test, analysis of variance, and simple and multiple regression analyses were performed in this study.

以描述性统计、独立样本t检定、变异数分析、简单回归分析及复回归分析等统计方法来分析。

Further, considered the considerable uncertainty of current sample variance, a reliability estimation method based on t-distribution theory and empirical logarithmic standard deviation is proposed.

进一步考虑到工程实际中当次可靠性试验的样本方差具有较大不确定性的因素，提出了基于对数标准差经验值的t分布可靠性评估方法。

After extending the definition of tangent distance,we extract the directions of variance of sample sets using Singular Value Decomposition based onthe original image, and use them as the tangent vectors of training sample sets.

本文把切线距离的概念进行了进一步的延伸，在原始图像的基础上，用奇异值分解方法直接提取样本集合中所包含变化的方向，作为训练样本的切线向量。

Objective To explore the relationship between sample size and variance of means for persona noise exposure in weaving workers as to contributing evidence for establishing personal noise exposure measurement guideline.

使用噪声剂量计测定工人的个体噪声暴露水平是解决生产现场工人在复杂噪声暴露情况下测量数据不准确和不稳定的一种新方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。