讨论了等距抽样中,如何利用辅助信息改进总体平均值的估计,以达到提高估计精度之目的。
This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.
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.
一位典型的爱尔兰家庭主妇估计今年要花费1.339欧元($1.734),高于美国家庭的平均值,甚至超过了法国家庭的两倍。
A typical Irish household is expected to spend euro1,339 this year ($1,734), rather more even than the average American family and more than twice as much as a French one (see chart).
期望的整体估计(E)值是加权平均值
The expected overall value of the estimate (E) is the weighted average
根据八位分析师估计的平均值,相比上周3.394亿桶的供应量,这周(截止到12月31日)的原油供应下降了175万桶。
Supplies fell 1.75 million barrels from 339.4 million in the week ended Dec. 31, based on the median estimate of eight analysts.
另一方面,功耗平均值也是非常需要了解的,因此客户可以估计连续运行此标识所需要的电费。
The average power consumption, on the other hand, is important to understand so the client can estimate ongoing electricity costs to run the sign.
实验验证:理论平均值公式就是随机变量取值的数学期望(估计)计算公式。
Experimental Verification: Theory formula is the average value of the random variable mathematical expectation (estimated) formula.
采用世代平均值分析的多元回归程序,对家蚕耐氟性状的基因效应参数进行了估计。
Based on the multiple regression procedure for the generation mean analysis, gene effects of fluoride resistance in silkworm were studied.
工业实际数据验证表明,智能集成模型的残硫估计误差平均值仅为7.5%,而且真实反映了烧结块残硫的变化趋势,可以为生产操作提供有益的指导。
The estimation model was tested by industrial practical data, its average error is 7.5%. So this model could be used as a guide in practical operation in sintering process.
然后针对期望用户,对一个符号内的状态估计求平均值,接着进行多径合并再判决。
To detect the expected user's symbol, the average of the state estimates in a symbol interval is calculated and then multi - path combination is applied for the following decision.
而后基于平均值模型结构建立了柴油机转矩估计模型,对估计结果的准确度进行了试验验证。
Then a mean value model based torque estimation model of the diesel engine is built. The accuracy of the estimation is examined by validation experiments.
使用误差估计值的平均值来校正后续伪路程测量值中的误差。
The mean value of the error estimates is used to correct the error in future pseudo range measurements.
在平均值为零或平均值为已知的季节时间序列模型中,根据加权对称估计量提出季节单位根的检验统计量,并求出此统计量的极限分布的表达式。
In this article, we propose seasonal unit root test statistics based on the Weighted Symmetric estimator and derive representation for limiting distributions of the statistics.
6西格玛黑带应了解,根据所给量值(例如,平均值)是假设的,还是按样本估计的,在分析时需要不同的方法。
The Six Sigma Black Belt should know that different techniques are required for analysis depending on whether a given measure (e. g., the mean) is assumed known or estimated from a sample.
采用分布图法抑制干扰因素,消除疏失误差并利用算术平均值与分批估计相结合的方法对数据进行融合处理,得到所需的测量结果。
The method to reject and calculate the mistake error of the transformer /low voltage user remote monitoring and the principle of data mining were present.
本文基于辨识 ARMA新息模型生成估计残差序列 ,再对残差序列的平均值和无偏方差进行假设检验 ,可实现工序质量的异常诊断。
In this paper, a method of process quality diagnosis using hypothesis testing for residual sequence of ARMA innovation model estimation error by recursive maximum likelihood method was studied.
对基于不完备样本集的参数学习,则首先计算参数值的上限值和下限值,再利用某种策略,如平均值法,得到参数的最终估计值。
The upper limit and the lower limit is computed first when inducing the CPTs from uncompleted dataset, and the point value is estimated by some method such as averaging.
在厚尾分布中,平均值会受到异常值的影响,因而需要好多年的数据才能得出稳定的估计。
This is because in fat-tailed distributions, the mean is affected by outliers and therefore one needs many years of data to arrive at a stable estimate.
一个简单的例子是计算相隔十年的两次人口普查之间的平均值,从而估计第五年的人口。
A simple example is calculating the mean of two population counts made 10 years apart to estimate the population in the fifth year.
抽样分布样本效果大小的平均值可以作为总体效果大小的估计值 ,它与样本容量和抽样样本数目有密切关系 ;
The simulated experimental results showed that significance t testing is highly related to population distribution effect size and sample capacities, yet rarely related to the numbers of rand…
抽样分布样本效果大小的平均值可以作为总体效果大小的估计值 ,它与样本容量和抽样样本数目有密切关系 ;
The simulated experimental results showed that significance t testing is highly related to population distribution effect size and sample capacities, yet rarely related to the numbers of rand…
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