《计量经济学》课程教学资源（国外经典教科书）Gujarati - Basic Econometrics, Fourth Edition

Ch. 21 Univariate Unit Root process 1 Introduction Consider OLS estimation of a AR(1)process, Yt= pYt-1+ut where ut w ii d (0, 0), and Yo=0. The OLS estimator of p is given by and we also have

Some Terminology o In the simple linear regression model where y=Bo+ Bx+ u, we typically refer to y as the a Dependent variable, or a Left-Hand Side Variable. or Explained variable, or Regressand

Why study econometrics? Rare in economics(and many other areas without labs! ) to have experimental data Need to use nonexperimental. or observational data to make inferences eImportant to be able to apply economic theory to real world data Economics 20- Prof. Anderson

一、参数估计量的区间估计—不做介绍 二、预测值的区间估计

一、随机解释变量问题 二、实际经济问题中的随机解释变量问题 三、随机解释变量的后果 四、工具变量法 五、案例

§2.1 一元线性回归模型的概述 §2.2 回归模型的参数估计

一、序列相关性概念 二、实际经济问题中的序列相关性 三、序列相关性的后果 四、序列相关性的检验 五、具有序列相关性模型的估计 六、案例

一、模型参数的线性约束 二、对回归模型增加或减少解释变量 三、参数的稳定性 *四、非线性约束

一、模型的类型与变换 二、非线性回归实例