货币基金组织估计，如果波动率的两个标准差超过了1990年以后的平均值，新兴市场的利差将扩大两倍。
The IMF reckons that, if volatility moved to two standard deviations above its post-1990 average, emerging-market debt spreads would more than double.
根据统计分析和贝叶斯估计结果，建议了强度等级为C20和C30再生混凝土抗压强度的标准值与标准差的取值。
Based on the results of Bayes estimations, the standard deviations for the compressive strength of RAC with strength grades of C20 and C30 were proposed.
仿真和实际数据处理的结果表明，该方法在参数估计误差和标准差方面明显优于其它算法。
The results of simulated and real data procession show that the proposed method favorably compares to other ones as to the parameter estimation error and its standard deviation.
又或者，在讨论方差估计的时候，我们常用S2，称为标准差的平方。
Or, especially when talking about estimates of the variance, we sometimes say S2 or we say standard deviation2.
给出了正态总体均值和标准差的最大似然估计（M LE），似然比检验统计量及其渐近分布等结果。
The maximum likelihood estimators(MLE) of means and standard deviations, and the asymptotic distribution of likelihood ratio statistic were given.
给出了一种混凝土验收批强度标准差的无偏估计方法。
A new method for unbiased estimating standard deviation of strength of concrete of inspected lot is proposed in this paper.
在过程能力分析中通常采用子样级差或样本总体标准差来估计总体标准差。
The standard deviation in Process Capability Index(PCI) is estimated by using the subgroup ranges or the sample standard deviation.
对于参数估计量的标准差，我们则是利用拔靴法来估计，其结果的表现也与仿真的标准差很接近。
Results show that the proposed weighted regression calibration method is the most efficient and that the standard errors estimated using a bootstrap procedure are satisfactory.
对于参数估计量的标准差，我们则是利用拔靴法来估计，其结果的表现也与仿真的标准差很接近。
Results show that the proposed weighted regression calibration method is the most efficient and that the standard errors estimated using a bootstrap procedure are satisfactory.
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