sample mean

In a simple random sampling, the sample mean is an unbiased estimate of the population mean.

在简单随机抽样中, 样本均值是总体均值的无偏估计.

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The precise foil of the alloy is provided with excellent temperature self compensating property and other properties, especially mean thermal output coefficient and adaptability to sample materials.

该合金精密箔材具有优异的温度自补偿性能和其他性能，特别是其平均热输出系数Ct和对试件材料的适用性明显优于国外。

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Examinations show that our arithmetic can make good use of HVS system, and is robust to common image processing such as noise, mean-filter, sub-sample and JPEG compress. String-type watermark is more robust.

经过试验检验，该算法不仅能很好地结合HVS系统，且对一般图像处理（对抗噪声、均值滤波、亚抽样和JPEG压缩）都具有好的鲁棒性，字符型水印的效果更佳。

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Uncertainty of Sample Mean and Standard Deviation.

取样平均值与标准差之不确定度.

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The mean simulation precision of cubic tendency plane model is 93 01%, while the mean forecast precision of 20 groups of sample prepared in advance is 93 24%.

而三次趋势面模型的平均模拟精度为93.01%，预留的20组样本的平均预测精度为93.24%。

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We process the data of normal group with independent sample t test, and operation group by paired t test. Results: All indexes were calculated the mean and standard deviation.

所得数据正常组采用独立样本t检验，手术组采用配对t检验。结果：所有指标均计算得出均值及标准差。

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The analysis tool is SPSS 13.0; statistical method is mean comparison and independent sample t test.

主要采用的分析工具是SPSS13.0, 采用的统计方法是均值比较法和独立样本t检验法.

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The author has found that arithmetic mean value of the coercivity mea-sured along two directions of sample axis is invariable.

找到沿样品两个方向磁化后，得到的矫顽力算术平均值不变原理。

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And what I mean, I guess, is that two games is a very small sample size.

而我所说的则是这两场比赛有些相似之处.

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Disturbed by random selection within a certain number of particles in the sample, calculate the sample mean and variance of the target space, which is proposed for the maximization and minimization problems of the robust model ofa single target, and extended to multiple targets. 4.

通过随机选取粒子扰动范围内一定数量的样本，计算出样本目标空间的均值和方差，由此提出了针对最大化和最小化问题的鲁棒模型，并推广到多个目标的优化命题。

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