Introduction to R for Economics and Business
Prerequisites
I Working with Data
1 Basics of R
2 Data Transformations with dplyr and tidyr
3 Visualizing data with `ggplot2
4 Factor Variables
- 4.1 Creating Factors
- 4.2 Some other useful functions from forcats
  - 4.2.1 Modify factor levels
5 Reading and Writing Data
6 Working with Strings
II Regression Modelling with R
7 Linear Regression Essentials with R
8 Linear Models with Fixed Effects
9 Instrumental Variables
10 Difference in Differences
11 Regression Discontinuity Designs (RDD)
III Extended Exercises
12 Data Wrangling with dplyr
13 Plotting with ggplot
14 Replicating ADH
IV Solutions to Extended Exercises
15 dplyr solution
16 ggplot solution
17 Replicating ADH
References
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An Introduction to R for Economics and Business Research

Chapter 10 Difference in Differences