## 本次澳洲作业案例分享主要为应用微观计量经济学代写的exercise，以下是具体作业详情：

1. 下面的方程代表纯情况下的结果方程随机化：

2. 定义条件独立假设的概念。

3. 随机化的主要问题是什么？

a.上述所有的湾
b.一、二
c. 二、三
d. 仅三

4. 用你自己的话，定义每个概念：
E[易| Di = 1] – E[Yi | Di = 0]：观察到的平均收入差异
E[Y1i | Di = 1] – E[Y0i | Di = 1]：对被治疗者的平均治疗效果
E[Y0i | Di = 1] – E[Y0i | Di = 0]：选择偏差

Part 1: Definitions and Basic Concepts

1. The following equation represents an outcome equation in case of pure
randomization:

where Y is household’s monthly income, T is a microﬁnance intervention (T = 1 if
household gets the intervention and T = 0 if household does not get the intervention),
and ε is the error term. Under pure randomization, the impact of microﬁnance
program on household income is given by:

2. Define the concept of Conditional Independence Assumption.

3. What are the major concerns of randomization?
I. Ethical issues
II. External validity
III. Compliance and spillover-effects

a. All of the above
b. I and II
c. II and III
d. III only

4. In your own words, define each of these concepts:
E[Yi | Di = 1] – E[Yi | Di = 0]: Observed difference in average earnings
E[Y1i | Di = 1] – E[Y0i | Di = 1]: Average treatment effect on the treated
E[Y0i | Di = 1] – E[Y0i | Di = 0]: Selection bias

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