he is definately not the easisest professor you would get here at ucla, but he's ok one.
if you only study his practice exam posted on the class website, expect to get c or below(or maybe not if you are smart enough). KNOW THE CONCEPT from the notes he post, it can be very hard due to overly used sigma and other mathmatical terms if you are not a math person. If you mastered the concept he posted on the website and do the practice test, you will be fine with his exams which is more like to SAT style questions where you dont have to think but apply the concept. Theres no point of avoiding him, even if you take the same course with another professor only 25% will get A 25% will get B and rest will get C or below. If you cant be those 50% in liao's class im pretty sure you wont be in top 50% to other professor's 41.

TIPS: dont panic when you see the problems that were not on homework or your practice exams.. because the answer will be kinda obvious. if you roll the dice ten times and the number of times that you will get 3 will definately not be .9000
half of the test questions have obvious answers.

great econ professor in econ department. You can learn a lot from the class. Selling textbook for econ41

I found Liao to be a great professor overall. He posts concise lecture notes and gives fair tests. There isn't any homework (although he assigns homework questions for your benefit), and your grade is 40% midterm and 60% final. The midterm was super straightforward, but the final was a bit harder, since we needed a proper distribution for the curve. I am not a straight A student, and I found his class very enjoyable. I would recommend him.

Got an A- but would definitely not recommend zhipeng. His notes in class are basically word for word from the notes that he posts. He does not go over many examples in class and a lot of the notes are just long proofs for things that really dont matter. He is hard to understand (accent) and often spells things wrong when he writes them on the board. I never went to him one on one so i can't comment on that. He tries his best to answer questions and you can tell he cares about the students he just lacks the ability to convey things properly and effectively. He just writes stuff on the board and doesnt explain how you would use something or what it is for. Basically says use this and plug in this and you get answer. You won't learn anything. Midterm was easy final was hard, He uses the department curve 25% A 35% B 25% C everyone else D/F. So it is possible to get screwed by the curve. Don't take this class and avoid a ton of stress.

It was so easy that I got A+ even though I did not go to any of his lectures after the midterm. It's extremely helpful if you take Stats 10 before taking this class.

Good class overall. Need textbook for HWs and exams. Selling book for $80 (new costs $120). Email: *************

A fair class...Contents can be a bit confusing if you don't go to the lectures at all or they are completely new to you because there is more width than depth in this course. But just because of that, once you are able to comprehend the core concepts, it would be an fairly easy course.

Taking this class online, his accent made it REALLY REALLY hard for me to get through the lectures. I felt quite lost in this class as the professor focused only on delivering the material and did not really address anything else in the class? Just read the syllabus. Discussion sections are basically office hours with the TA, so you could use that if you're lost at lecture. This class uses R and they go at a pretty decent pace so just make sure to keep up with it each week.

I feel bad saying this, but it was difficult to understand Zhipeng because of his accent. It made going to lecture pointless, so I exclusively used the slides. That being said, the slides are very comprehensive and give you almost everything you need to know for the class. The workload is decent, but is mostly graded on completion. The labs supplied all the code necessary for assignments, so an understanding of R isn't really needed. Overall, a decent class with a high ceiling, if the subject material really speaks to you and you want to learn more.

take his class if you took AP STATS in high school. His class has over 70% content same as AP STATS. I got 5 in AP so I easily got 100% in midterm which takes up 30%. However, after midterm, he started talked about something new and real shit. Those were tough, but u can memories the solutions and saw the same question on final from practice and hmw. DO THE HMW , rememember this shit. As a Chinese, his accent is not strange to me. I can easily understand about his talking and if you have no time for class, you can have recordings freely. But his voice in recording is not that clear. the discussion is not that helpful but mark it if you need. The final test is time limited and really tough. I got 45/51 in final and curved to A. However, on final, I just skimmed the test and did each question for only once, no time for thinking or reviewing or checking. Do the practice well and be familiar with the tests itself!!!!!!!!!!!!!!!!! Liao is good and familiar with his content. So if you are good at stats, take his class and kill the game.