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LAW OF ITERATED EXPECTATIONS Law of Iterated Expectations Theorem 1 Law of iterated expectation.s The notation Er[ indicates the expectation over the value of a Example

Expectations and Conditional Expectations Definition 1 Discrete Random Variable random wariable is discrete f the set of outcomes is either finite in number or countably

Review Conditional pdf Let(Y1,., YN) have joint pdf f(31,.. JN). Let f(3J+1, .. yN)be the marginal pdf of(y+1,……,YN). The conditional pdf of y1,…, Y, given y+1,…, YN is defined by

一、城市化的概念 二、城市化的推进机制 三、城市化的规律 四、城镇体系的结构 五、城镇体系的形成与发展

Review Problems for Midterm 1 Least Squares 1. In the linear regression model

Chapter 7 Functional Form and Structural Change 7.1 Using binary variable Example 1 Earnings equation for married women

Chapter 6 Large Sample Inference and Prediction 6.1 Large sample inference Consider the null hypothesis

Chapter 4 Finite-Sample properties of the LSE Finnite-sample the n is assumed to be fixed normal dist n assumed Large-sample theory n is sent to oo, general distn assumed