Firstly, I was reading through Chapters 8/9 and found it to be amazingly penetrable material to understand 2SLS, kudos for making such an awesome resource.
Had only a few readability improvements that are more of suggestions:
Fixed typos in chapter 9 - compiler -> complier
Katex:
changed log to \log
included \mathrm where variable names/ functions are used
Firstly, I was reading through Chapters 8/9 and found it to be amazingly penetrable material to understand 2SLS, kudos for making such an awesome resource.
Had only a few readability improvements that are more of suggestions: Fixed typos in chapter 9 - compiler -> complier Katex: