3) unascertained expectation
未确知期望
1.
Application of unascertained expectation in analysis of coal seam wall rock stability;
未确知期望在煤层围岩稳定性分析中的应用
2.
On the basis of Document , We give out the definition of unascertained expectation in this paper, and for further study of its proper ties, we give out an example of its application in this paper, too.
在文献[1]的基础上,给出了未确知期望的定义、性质及其应用。
3.
Through correcting gross error by unascertained expectation,it maintained all the information of data.
通过求未确知期望值实现粗差修正,不会造成有效信息的丢失。
4) Unascertained rational number expectation
未确知有理数期望
5) unknown variance
方差未知
1.
In the case of the independent random samples from n normal populations with a commonbut unknown variance, the likelihood ratio (LR) test that normal mean vector lies in the positiveorthant against the negative one is possible under mild conditions, and a new distribution, namedBeta Star distribution, which is found and used to determme the distribution of the LR Statistic.
样本来自于n维独立正态分0布,在方差未知情况下,偏侧均值的最大似然估计在特定约束条件下是可能的,此估计由新的分布所决定,新分布为β*分布。
6) expected variance
期望方差
补充资料:总体方差
分子式:
CAS号:
性质:表示总体离散特性的特征数字,以符号σ2表示。 ,在有限次测定中,样本的方差S2是总体方差σ2的一个无偏估计。
CAS号:
性质:表示总体离散特性的特征数字,以符号σ2表示。 ,在有限次测定中,样本的方差S2是总体方差σ2的一个无偏估计。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条