Wu is a very nice man, but a terrible professor. He often begins class with a joke or story, or asks us how we are doing, and when he notices he is 致郁 he will say "I know from experience there is nothing I can say to make you guys feel better". He does not respond to emails at all. The TAs are often just as clueless as the students when it comes to homework expectations. My TA said they had to "push back" against the professor on some of the homework specs when they were too vague or too difficult.

Grading scheme: 5% quiz (based on completion), 35% homework (coding), 25% midterm, 35% final. Quizzes were easy enough, timed in lockdown browser. Homework was very confusing, because the hw specs were often not specific, so the TA would email us 3 days before it was due to clarify how the autograder and student graders will score us. Averages on the homeworks were all over the place, between 75% and 90%, but grading was usually pretty generous (or I got lucky). Due every 2 weeks, 5 overall, so each one was worth a substantial amount of our grade.

Tests: Midterm and final were the hardest tests I have ever taken. Averages for midterm was ~55% and average on the final was ~40%. No curve on individual assignments, but there was an end of class curve of about 25% (so D- became B-). No study guides, and lecture notes are pretty confusing, so pay attention in lecture (not recorded, slide notes posted, but for the latter half of the quarter he taught on the chalkboard, not using posted slides). Midterm was all MC, Final was half MC half free response.

I do not think Wu wanted to teach this class. He often expressed resentment on the topics he had to cover. The last chapter was barely covered in class, but still covered pretty extensively on the final. Some things on the final were not even part of the course curriculum and never covered in class.

Discussion sections were optional, essentially homework help and quiz review.

Nice guy but workload is heavy (each hw took anywhere from 5-15 hrs) and exams are brutal. Curve is super generous so most people get decent grades but you don't really know your standing until the end. Class was hard but not impossible, just took a lot of time.

The most difficult concepts were taught right before the midterm and final. He does curve, but the exams were so difficult and I would not take them again. He is helpful in explaining the concepts, but the problem is that the difficulty from quizzes and in class examples to exam questions is quite a jump. I suggest looking up YouTube videos on how to do IEEE-754 conversions (extremely helpful) and any of the algorithm content.
As for the homework, they were mostly manageable, given that you go to office hours (his or the TA's) and get help. Note: you can't work on the homework together, so office hours is the only way to get help. Also, you don't get to drop any homework assignments. There was one extremely difficult homework assignment, so I suggest starting on homework as soon as possible so you can get help right away.

Miles is god, take Miles. That't it.

Stupid formatting requirement

“Could you give me some advices on this professor?“ Here is my answer. Just DON’T. Just DON’T. Just DON’T. At least don’t do it when you got options, like any kinds of options. I took 102B this spring with Wu, and these are my thoughts about this nonsense.
First of all, the grade standard of homework is totally ridiculous. I am not sure it’s the problem of grader or Wu. I did the homework totally the same as the grader’s posted answer, and I lost points. When I talked to Wu with the problem, which is frequently happened, he just told me to find TA. And then when I go to TA, TA told me to find Wu first cause he is also don’t know the answer. And his homework is really hard to understand what he is asking. He almost never taught us about R in the class, but his homework is all about R.
Secondly, his teaching quality is the worst I’ve ever taken before. His speaking is ambiguous and stuttering, just the same as his PowerPoint. You have to listen very carefully to get the idea of his lecture. And even if you do, it still chaotic.
Most importantly, the final is totally BS. He said several times that the final would be like the quizzes. But either he’s out of his mind, or I’m out of mine. It’s like dropping from heaven to hell.
All in all, I will never take his class again as long as I am alive.

I took the stats 102a during winter 2021, and currently taking 102b. Tbh, just take other prof if you can. Wu won't reply to emails, and discussion board. Also, for the first two weeks, we are just literally learning math 115a stuff whereas in his lec, he only talks about math concept rather than actual R coding.

I enjoyed this class because the professor is super organized. During each lecture, he essentially just goes over a slide deck that is typically uploaded to Bruin Learn in advance, so I would argue that you could probably succeed in this class without actually attending lectures. The homework assignments, which are worth the bulk of your grade, are a total mixed bag in terms of difficulty level. When I took this course, there were five homework assignments in total, and the first one was ridiculously easy as someone who has previously taken a programming class, and the third and fifth assignments were also very manageable. The second and fourth assignments, on the other hand, took upwards of 20 hours for me personally. Luckily, the professor is very receptive when he is told that some assignments are more difficult, so you will usually receive some sort of class extension for the more challenging homeworks. The quizzes are somewhat difficult most weeks, but they are graded based on completion. Exams are similar in content/structure to quizzes, so be sure to review quizzes in advance of the exams. If you have any previous programming experience, this class is pretty easy.

Nice professor. Tries to help a lot. But not very clear. And material is difficult (much bigger step from stats 20!) so be prepared to work. I watched all of Prof Chen's lectures on YouTube and even some extra supplemental lectures from different universities to finally get different concepts in this class. Be prepared to do supplemental work to understand concepts. But he does try to help and genuinely nice guy

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.