Lectures slides are clear and informative. You might want to take notes on his lecture slide "doodles" during lectures, because they are important and will not be updated on lecture slides.

Homeworks and exams are tough. Although he meant well to push students study hard, assignment policies are harsh and he explicitly forbids collaboration. Respondus Lockdown Browser is mandatory for exams.

Heads up for homework due date changes and check CCLE daily. For Winter 2021, he moved the deadline of the last assignment several days ahead without informing students.

It absolutely disrupted my review schedule for another class' final . Some students I know ended up pulling all-nighters to cram this last assignment. Hopefully this will never happen again.

Dr. Wu is very generous with the grading (quizzes are only based on completion, assignments deadlines can be extended for up to two weeks,...). His office hour is great, and he is willing to stay a long time after to help you with the assignments. The curve of the class is also fantastic (I certainly would not get B if not for the generous curve). However, the midterm and finals can be very rough where he asks minor details questions during lecture, so be very well-prepared! Overall, Dr. Wu is very kind and understanding and I certainly would want to take classes with him again.

Professor Wu and the TA struggled a little with the online format, but that was to be expected for professors and students alike. Unlike some other unsympathetic professors, though, Professor Wu was obviously doing his best to create a good learning environment and be caring for his students.

Nonetheless, there were some inherent issues with his implementation of the course. For one, the Stats departments obsession with non-collaboration on anything was incredibly annoying. Not being able to work on homework together was tough and isolating. The quizzes were hard and it was unclear as to what topics they were covering. The tests had extremely tough wording at times, and the homeworks were very stressful at points. Most annoyingly was the specificity of the homeworks. Having to name files a certain way or making sure the files were knittable (which an easy solution was never explicity given to this problem) or automatically have 50% of the grade taken off was harsh to say the least.

The use of campuswire helped a lot. The TA Oonyambu was very responsive, albeit a little short with answers sometimes (see also: the way Jake answers questions but a little less harsh). Overall, I would take this class again in its second, COVID-tested iteration, which I think would have a lot less kinks than my session had.

The grading in this class consisted of weekly homework, a midterm, final and a weekly quiz. I'd say the material/class was more difficult than I expected, especially homework assignments. But at the same time, Wu was aware when he made things too difficult and made accommodations like extending homework due dates, giving hints and canceling quizzes when necessary. He accommodated students with the covid-19 epidemic by heavily curving the final since I did not deserve the grade I got in the class, to be honest.

Overall, with the clear lectures and challenging but fair material I'd recommend Wu for this class if you did well in stats 20 and remember lots of R coding from then. Otherwise it might be tough.