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n.[数]异方差性
1、Due to the excellent properties of showing heteroscedasticity, Panel Data models have been greatly used in economics.───由于能体现异质性等一系列优良性质，面板数据模型正被广泛应用到经济学各个领域中。
2、Under this circumstance, Engle brings forward the autoregressive conditional heteroscedasticity model(ARCH) in 1982.───在这种情况下，恩格尔于1982年提出了自回归条件异方差模型，简称ARCH模型。
3、The conditional heteroscedasticity is a typical characteristic of finance time series.───条件异方差是金融时间序列变量的一个典型特征。
4、The generalized autoregressive conditional heteroscedasticity (GARCH) model has the ability to describe the volatility of time series.───广义自回归条件异方差 (G A R C H)模型具有描述时间序列波动性的能力。
5、The autoregressive conditional heteroscedasticity (ARCH) model and cointegration theory of the non-classical econometrics are reviewed. 3.───对非经典计量经济学中的条件异方差模型和协整理论作了较为完整的综述。
6、The present normal heteroscedasticity testing means are parameter means, and they call for a certain distribution of the parameter.───异方差现有常规检验方法的大多是参数检验的方法，需要参数服从一定的分布。
7、Non-constant error variance or heteroscedasticity.───非常量误差方差或异方差性。
8、This paper deals with the statistical inference of an autoregressive conditional heteroscedasticity (ARCH) model under restriction.───研究序约束条件下自回归条件异方差 (A R C H)模型的统计推断。
9、One kind of heteroscedasticity testing method was proposed through extreme value theory and extreme value index estimator.───极值理论，通过极值指数估计量，提出了一种可行的对异方差的检验方法。
1、They are all used with the hypothesis of homoscedasticity. Heteroscedasticity will danger accuracy of the model. This thesis introduces heteroscedasticity to the reader.
2、We find that the price in China's economy is symmetric and has conditional heteroscedasticity in the period of expansion and recession.