volume variance

基本解释

We mainly discuss three aspects: (1)to describe the mean and variance calendar effects of return and volume;
主要从以下三个方面加以讨论：收益率和交易量的均值及方差的日历特征；
In this paper, we apply multiassets variance to analyze the informational efficiency of 50ETF, and test the price discovery efficiency of 50ETF by trading price and trading volume.
本文采用多资产方差分解法分析50ETF交易的信息含量，从交易价格和交易量对50ETF的价格发现功能进行检验。实证结果显示，我国ETF具有一定的价格发现功能，但与西方成熟资本市场相比仍存在一定差距。
A standard control chart based on probability integral transform theory is given, which can be used to control process mean and variance efficiently in the low volume manufacturing.
用概率积分变换理论，给出了控制过程均值、过程方差的标准化控制图，适用于小批量生产环境下对过程均值、过程方差的有效控制。