Causal Inference -- 17/23 -- Difference-in-Differences Basics I 

Happy to hear you found it useful. Spread the word!

Correct

@@ben_elsner thank you soo much . Can you also explain about the treatment intensity ( the fraction of teens as discussed in anguist book ). You don't need to make a video on that just explain in comments

@@jayagupta9239 Not sure what you mean by treatment intensity. In most DiD applications the treatment is binary, such as a policy either switching on or off. There is newer research on DiD with a continuous treatment, but that's a lot harder. For a reference, see here: arxiv.org/abs/2107.02637#:~:text=This%20paper%20analyzes%20difference%2Din,to%20the%20binary%20treatment%20setup.