Juana Sanchez is a really good professor, you just have to be polite and make her feel that you are involved in the class. Her exams are pretty long but the questions are not that hard. She provides very clear and concise study notes and the homework are helpful for the midterms and final. Some people complain that she gives them anxiety but don't take her too seriously, she is not mean, she just wants everyone to study the minimum required. She is actually pretty helpful in office hours, so don't hesitate to go and see her to ask questions about the class or homework. The material of the class is very interesting and really not that difficult overall.

CLASS: STAT 100A

Worst class I've taken. I had to use the slides from Christou because she was just awful. She has no idea how to give lectures and is extremely rude to students. Office hours are horrible and she is very condescending. During lecture she can also be very rude. She is all over the place when she lectures and she doesn't explain why equations work. The class itself isn't too difficult but she makes it unbearable, and the amount of homework she gives is unreasonable, this class was a lot of busy work.

Horrible horrible class. I had crippling anxiety and walking into this class tipped me over the edge. Her homeworks are overload and are carelessly created (full of mistakes and unclear directions) -- however because of this she is lenient on the grading. The group "quizzes" she assigned took an entire weekends worth of time and she ended up handing out A's to everyone that completed it.

Contradicts herself a lot during lecture and has an attitude. For example in the beg of the quarter she would get mad at people who would just listen to her instead of taking notes, and she said "What are you guys doing? You guys should be typing and not just listening... you need to turn this in. Please get busy". Later on during the quarter when we are typing what she's typing, she yells "Can you guys please stop typing. Just listen.".

Always lets us out late -- this is a problem because she opens up submission forms for in class participation activities when class is supposed to be dismissed and she talks about the weekends homework assignment after the class is supposed to end.... always end up being 5 minutes late to my next class.

Last thing: Grading is very inconsistent. First 3 or so quizzes were grader rather rigorously. Average was a C, but towards the end the quiz averages were 90-95. Not sure whether this class was curved or raw scored, but if it was curved, this method makes it impossible to beat the class average and better your grade especially if you got off to a poor start.

Tips for prof: End class on time and make more manageable homeworks. Also keep grading consistent please.

This class sucks. Professor Sanchez is extremely unclear at explaining concepts, and it's not even like you can look at the textbook for a more clear / different explanation of concepts -- she wrote the textbook herself, complete with grammatical errors and non-insightful explanations. She has you complete these ridiculously long and tedious homeworks every week, making this class have one of the toughest workloads of my quarter even though it was by far the easiest material. A couple examples of non-related and non-helpful homeworks include one where you had to record an interview of you with another student about how probability was relevant in your major and another one where we had to submit a 2-page biographical paper on a historical mathematician in the field of probability. She hands out worksheets in lecture as opposed to discussion and has you talk to group members in the middle of lecture, so you can't even skip those even though they're borderline useless. The questions she asks are usually unclear or very poorly worded, and on top of that she can be eccentric to a fault - on our timed midterm, there was a question with a link to a YouTube video of a parody of 'Someone You Loved' by Lewis Capaldi with probability models, where the question was "which probability model was not mentioned in the video?" Something that would have maybe been funny to someone with a weird sense of humor and who wasn't in the middle of taking an exam. All in all, avoid taking this class with her as you will leave it with little useful knowledge except for how to get by in a class with an awful professor.

Coming from someone who didn't perform super well in this class but still passed, overall I would say I wouldn't recommend the class but it definitely didn't end up being as nightmarish as reviews stipulated and there are a few Reddit posts to corroborate this opinion.

The workload was significant but not over the top - a homework packet of 5-9 questions each week (most but not all a/b/c/d, sometimes to h) and usually assignments to turn in the next day in lecture (you have to check CCLE because sometimes she didn't remind us to do it). Sometimes gives pop quizzes in the middle of the lecture (off her powerpoint point slides she would have an example of the day's topic for us to work on and hand in our work, but only once or twice did she grade on correctness. It was more like participation even if wrong). That's about it for work; one midterm is multiple choice, the second is free response, and the final was mostly multiple choice with a little free response. Warning that she never gave enough time so you have to work fast. Sometimes she got rid of questions after realizing how long the tests were though.

Her exams are open note - first midterm we were allowed one page of formulas, second midterm and final were open notebook. Don't be fooled though, you barely have enough time to glance at notes so it's not super helpful unless you already know everything.

The good thing I noticed about the class that I was surprised about is how nice and available she usually was. She holds a lot of office hours and doesn't make you feel stupid for asking simple questions, and we usually had a lot of them because her lectures are way too fast. But another thing is that she records all her lectures and posts them online so I usually went back to watch them.

The complaints that she takes attendance every lecture for participation, and the complaints of her exam rituals are fairly accurate - she seemed obsessed with cheating and had us take lots of precautions for every test. She did in fact have a lot of typos in lecture notes and even in her textbook so hopefully your lecture will have a smart person to call them out.

Summary: If you ask lots of questions/don't fall behind like I did, you will be ok! There did end up being a big curve at the end of the class. Medium-to-slightly heavy workload with medium-to-difficult material - very light math 32B and no 33A. First half of class without any calculus even seemed harder for the class than the calculus bit.

From what I have heard of other Stats 10 teachers, I would avoid her at all costs. She was so confusing, hard to understand, not helpful, and just made the class as painful as possible. I took it during C sesh, so maybe it was due to crammed time, but the class was easily the worst I have taken at UCLA. The coding and exams are such a pain. If you are naturally good at statistics or already have basic knowledge, maybe this class will be fine. If not, I would HIGHLY recommend avoiding her.

I will keep this review simple. Took this class while working a day job during the Covid pandemic. So I might have a different perspective than others.

1. She gives daily homeworks with tight deadlines. That might sound easy to follow, but it isn't. I missed almost half of her homeworks. Of those I missed, half were because she posts them both at Gradescope and CCLE. What clarity. Also those freaking participation quizes... While my other classes have once a week homeworks with scheduled deadlines, her class was a mess.

2. She has annoying rules and mark schemes. She will take points off your work for the most annoying reasons. If you're someone who takes classes extremely seriously, fine, you'll succeed in her class. If you might have other things going on in your life, and just want to learn statistics, don't take this class.

3. She makes the textbook she wrote to be the class textbook, so she'll make money off of it. The worst thing is, she cannot express herself clearly. With statistics, most questions are long convoluted. Her questions are often ambiguous and she insist on making her own questions. If you didn't understand it, too bad, you'll get no points because of her mark scheme is strict down to the last symbol.

Well, I don't wanna say she is a bad professor. However, she SHOULD NOT be your first choice. I took part of stats 100A with another professor last quarter and dropped it because something happened. It become get me feel regretful now.

She always let you do lots of meaningful work. For example, the class is MW but the deadline is Friday midnight. Although the grades is not based on correctness, you have to do everything perfect to get full credits. Then, you will have a quiz before Sunday midnight. Something like posting commonets is still part of your grades... FUCK

I promise, knowledge in stats100A is not that difficult. The only difficult thing is to finish all of your work. Normally, a stats class should only contains weekly homework, 1-2 midterms and a final. Some quizzes are still acceptable.

操，我不想说了。远离丫的！！！！！这里是地狱！这里是对你校园生活的折磨！！！我要不是因为着急毕业肯定drop掉。

I don't understand why she is still a professor at UCLA. The worst professor I ever had in my life. A lot of homework ridiculous
I feel like I learned nothing from her lecture.
Avoid her, please.

She is by far the worst professor i've met from UCLA. She essentially floods you with handouts and homeworks on topics you have yet to learn and she gives you rude and unclear answers when you ask for help. Her lectures are so dry and she makes you do really unnecessary participation activities in class as well as pop quizzes and also makes you do 2 hour quizzes at home every week. The midterm was really rough despite the topics being pretty easy she purposely chooses the hardest questions to lower the average and gives barely enough time to finish. The final was a bit better though and the TAs were the most help. In all just try to avoid her at all costs to avoid being swamped with work and dragged through the mud with trivial nonsense that will ruin your grade.