3:15 "leads to an equal distribution of known and unknown confounders ...". EQUAL distribution is hard to achieve, however, randomization is the best action to be taken to get as close as possible to that. I should admit that, at the end of the day, this presentation is very informative and useful. Thanks.
Thank you for the video, can you help me how to prove that is unbiased in this question? Question: Compare the average height of employees in Google with the average height in the United States, do you think it is an unbiased estimate? If not, how to prove it is not matched?
