无偏性 meaning in Chinese
u iasedne
unbiasedness
Examples
- We begin by establishing the unbiasedness of ols estimators under a set of assumptions
首先，我们在一些假定下证明ols估计量的无偏性。 - Aiming at regression analysis of prediction variable with error , this paper discusses the estimation of regression of coefficient , and a method is given
林业科学试验的预测模型中往往带有测量误差，此时回归系数的估计不具有无偏性。为解决这一问题，从合理安排试验的角度，给出了一个有效的解决办法。 - Third , the accuracy of parameter estimate methods for the 2 - parameters weibull distribution and four different estimate methods for failure time based on the life of fixed time measurement are discussed
在无偏性和均方误差最小的意义下，得出了上述估计方法的优劣，为定时截尾、定时测试试验数据下的可靠性分析奠定了基础。 - The conclusion is that the back analysis results have the character of unbiasedness , efficiency and consistency . bayes random method which considers the prior errors is better in the back analysis of embankment dam ' s nonlinear materials
结论认为bayes随机反演结果具有无偏性、有效性和一致性的特点；在土石坝等非线性材料反演分析中，考虑先验信息误差的bayes随机反分析方法具有较好的适用性。 - In the third section three different forms of heteroscedasticity are used in the random simulation and then park test , glejser test and goldfeld - quandt test are compared although the existence of heteroscedasticity does not destroy the unbiasedness of the ols estimators , the variances become larger
异方差的存在虽然并不破坏普通最小二乘估计量的无偏性，但是估计量的方差变大了。由于估计量方差的变大，就使通常假设检验的值不可靠。