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.

Very mid. Prof wasn't that good. The slides alone are honestly as good as lecture (or better). The class is very closely related to Math 151A like root finding, floating point (which are good topics), then it goes into R's classes which are different from C++ and regular ones, so it's pretty annoying. There is some useful data manipulation and regex.
The homeworks were fairly long. And the tests are pretty tough. Our final had ~40% average. We did obviously have a fat curve. But he says the tests are similar to the quizzes, which is a lie. They are scaled in difficulty by a lot and more specific on details, I see they are similar but tougher. The cheatsheet imo is pretty important, and it's crucial you have a good one.
The math and programming part is nice, the R classes portion is weird and annoying.

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

Stupid formatting requirement

102C is one of my favorite classes here at UCLA. I feel like the Bruinwalk review does not do Guani justice. It is true that his lecture clarity are not as good as many of the lecture focused professors (shoutout to Mike, Miles and Linda! Loved those classes), but Guani is definitely way above a 1.9 rated professor in my opinion. His classes are curved with a fair scale (30%As, 30%Bs, if I remembered right) and it's a "if everyone did good, everyone get good grades" type of curve. He is helpful during office hours and gives homework extensions. He can be funny during lectures and tries to make them engaging for students.

I can tell that he definitely cares about his students and definitely wants everyone to do well, however I must also agree that he can be difficult to understand during lectures. (Man is just not that good at explaining theoretical concepts, but being the research professor as he is, all the lectures are theory heavy.)

Guani deserves a rating around 3.2~3.6 in my opinion. His homework is coding based, difficult but doable, exams are theory-focused like lectures. He usually gives a good amount of review and hints before the exams so that you can prepare well. If you attended all his lectures and go to office hours for anything you don't understand, you will get a good grade.

If grades is not all you care about, I also think that his lectures are worthy attending just for the theoretical concepts alone. 102C goes over some of the foundation of grad-level statistics, so I think its good for it to be theory heavy. You get to practice the theories with coding in homework, so don't worry about application either.

Anyways, don't be scared if you didn't get in Mile's 102C. I know Guani gets a lot of hate in the Stats department but I genuinely thinks that he is a good person and want you to do well. Best of luck and I hope you 102C end up being fun for you!

“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.

The class was online for the summer quarter. I never interacted with the professor, but he seems like a nice guy who wants the best for his students. He recaps previous material and asks several times during the lecture if everyone understands his delivery of the material. Unfortunately, I found him quite unclear and thought he made seemingly simple topics more complicated. Though he follows a slide deck, I found his lectures to be unstructured and hard to follow. I would listen to a lecture and leave more confused on the topic, not knowing what the main objective of the lecture was. After a couple of weeks, I stopped watching the lectures and just read the book that he used to make his slides.

For both exams (esp the midterm), it was hard to study, because we did not have access to answers for the quizzes, nor was there any study guide outlining what to expect on the exam.

As far as grading goes, HW was graded very generously, with average scores of 95+ on each hw. Quizzes are based on completion, so for the quizzes graded at the time of this post, I have received fair grades. Our midterm exam had a pretty bad mean (62%), which is typical for this professor. Not sure what the final exam scores will be, but I am expecting around the same, if not a little better.

TDLR: Nice guy, seems like he's chill but thought that he was not a good lecturer at all. Poor exam averages, but fair grading on homework and quizzes. Would try to avoid him and take another professor, but not the end of the world if he's the only option.

Professor Wu was one of the sweetest professors I've had here. The exams and material aren't necessarily challenging, but there are quizzes, labs, and homework to stay on top of. Overall, if you manage your time well, this class ends up pretty easy and most people are successful in it. Would recommend taking this class with him.

The class material itself is not difficult, but it is also not very interesting. Wu isn't a bad lecturer but he also isn't reinventing the wheel when it comes to it either. TA's walked through every single lab and homework. Tests are not difficult. If you stay on top of it, an A is definitely possible

Wu is a nice professor who replies to your email even late at night and during holidays, which is amazing. He tries to be funny in the class and jokes at times, but sometimes the class is a little bit boring because of his monotonous voice. Workload is acceptable. The lab is quite easy since TA guides you through. Final is harder than the midterm.