Professor Li is a very kind and caring professor, and he definitely seems genuinely interested with his students learning and discovering meaningful applications of the material taught in 100B. The only issue with Professor Li is his presentation style. He puts up 70 slide slideshows then talks through explaining them with minimal notes by hand. It is very hard to pick up on his thought process, and sometimes how to do the actual math needed when Professor Li is presenting. Allen was an amazing TA however and was always super helpful with HW and even explaining what was wrong on a test.

Lectures were pretty disorganized, at least in the way they were presented, although the slides themselves actually contained pretty good material. This class consisted of three in-class exams with no final, which were all open-notes, which I appreciated. Basically, just read the slides and condense it down to the most important concepts/formulas, and use that as a reference during your exams. Tests were mainly computational + R code as far as I recall and generally reasonable. In comparison, the homework is very difficult and hopefully your TA will explain the answers every week in section. There's a lot of material but some of it was certainly interesting in my opinion.

prof is super nice, but we rarely do practice problems to work thru cohesive examples on how to solve the problems. midterms are super similar to the homework and lecture reviews

Disorganized lectures. HW's take ~5 hours every week. HW's must all be typed either in Latex or R. If you have a good TA, it helps. A lot of this class is studying by yourself.