This class is so terribly disorganized. Prof. Sanchez consistently had typos on HW assignments and even exams. There are 3 group projects worth 25% of your grade, not something I expected in an upper div college stats class. I am here to learn statistical models, not walk around campus counting how many Bird scooters I see, or play group video game puzzles on software that hardly even works. Make sure to always read rubrics CAREFULLY or she will happily take off points for small issues. The regular HW assignments, despite the typos, were pretty reasonable. Lectures were slow and boring, and she would often lose her train of thought. Isn't the point of a recorded lecture that you can do multiple takes until you get it right?? But she got the important stuff across at least. Exams were similar to HWs, but on Canvas. They were annoying but nothing crazy. I could manage this class's errors on lectures and HWs and exams, but those group projects were such a waste of time and contributed absolutely nothing to my learning. This class was frustrating, and I complained about it consistently. Thankfully, it was also easy enough to get an A, or at least an A-, by just carefully following every direction as best I could. If you have to take this class, make sure you do the same.

In all honesty, this course wasn't as bad as the reviews would have made it seem. I do think it's annoying that the required textbook is written by herself, but you can get an outdated version and still probably be fine.

The tests and quizzes were difficult, but if you study and take advantage of the cheat sheets I think they aren't the worst. Christou's courses felt much more difficult to me, although I do think I had to do a bit more self studying in Sanchez's course.

Sanchez ... was honestly not as bad as the previous reviews make her to be. I took Stats 100A online (class format was online-asynchronous), but there were no synchronous zoom lectures I had to attend. Instead, Dr. Sanchez posts a module on Canvas every week containing the week's pre-recorded lecture videos, assignments and quizzes. The workload was fairly heavy; Dr. Sanchez's assigns plenty of weekly assignments and quizzes, and each quiz had like 20 questions. Here are the "good" and "not-so-good" parts of her class.

The good: Overall, Dr. Sanchez was very helpful. She replied to emails almost instantly, and her expectations for the most part were reasonable. The nice part was that her class is very structured (she tells you EXACTLY what you need to do every week and forces you to keep up with the material), so it was hard to fall behind. Overall, lecture videos were clear and polished.

The "not-so-good":
Workload became very heavy at times, and expectations for homework often times were unclear and vague. The Cognella active quizzes and review assignments could at times be a real time sink, since many of the assignments contained more than 20 questions, often times with multiple parts (a),(b),(c) etc. On top of that, Dr. Sanchez assigns weekly homework, which she claims helps you apply knowledge of probability to the real world. This is a fantastic idea, only that Dr. Sanchez provides very little guidance on how to obtain relevant statistical data and research papers for us to analyze. Due to her unclear and vague instructions, I wasted tons of time searching on the web for those data. Also, some of her homework feels like busy work. She once made us make a video explaining the biography of a probabilist of our choice (how is this relevant to what we're learning?).

Grading at times can be harsh, as some reviewers have mentioned. The 3-hour timed midterm was not difficult per se, but the grading was super picky. I kept losing 0.2 points per problem for "not clearly defining random variable" and "not checking assumptions for binomial."...etc. , even though I answered the questions correctly and showed work and explanation. The final was long and difficult, and I ended up not solving some of the problems due to running out of time. The averages on the exams as you can guess, were pretty bad. ~ 75 % for midterm, 60 % for final.

Overall, if you decide to take Sanchez for Stats 100A, try to take her in a quarter when you're not overwhelmed by 3-4 other difficult classes. It is definitely possible to succeed in her class, especially if you read her instructions carefully and follow them to a T on the assignments. That being said, her class is a challenge, not because of the subject matter, but because Dr. Sanchez can be strict in ways you aren't used to (including grading). Also, she said in the beginning of the quarter that a 95 is needed for an A, and 98 for an A+, but I believe she ended up curving. So don't be scared by the seemingly high expectations for an A; it is possible she might adjust the cutoffs.

This was Dr. Sanchez’s first time teaching this course asynchronously over Canvas. It was a trainwreck.

Her lecture videos were light on useful explanations and heavy on practice problems. Which is normally a good thing except she wasn’t the one doing the problems. We were. And it was all through this awful built-in quiz system on her videos that made it impossible to fast forward through them even with fancy Chrome extensions (trust me, I tried). If you get something wrong, have fun figuring it out on your own because she essentially just reads the problems aloud and moves on.

Here’s perhaps my most memorable moment in that class. We had two options for our final: a “data project” or an online open note final. Having experienced her unbelievably confusing and ambiguous midterm questions, I and many others chose to do the data project thinking it’d give us some semblance of control over our grades. I spent more time working on part one of this project than I normally do studying for a hard final. Checked my grade a week later: 50%. Highest score in the class was a 60%. WTF. Thankfully she let us change our minds at that point and switch to taking the final exam. From the grade distribution on MyUCLA it looks like almost everyone took her up on that offer. No way in hell we were gonna suffer through a second and third part of that.

I ended up getting a good final grade because of an unexpectedly nice curve. Even so, I learned very little from Dr. Sanchez herself and had a miserable first quarter back on campus primarily because of this class. If I could go back in time and redo this quarter’s enrollment, you bet your sweet bippy I would.

If possible, DO NOT take this class with Sanchez - take a different professor or the course equivalents in different departments. She is extremely unclear in all of her instructions for assignments, projects, exams, etc.

Probably the hardest class I took so far at UCLA, not necessarily because of the content but because of the workload. There are participation quizzes for every lecture, quizzes after every chapter, one midterm, and one final. She will NOT remind you when quizzes are due, so make sure you stay on top and check CCLE every day. Overall, this class is stressful but doable, and I don't recommend taking this class if your schedule is already tough.

This class was not as bad as a lot of reviews made it out to be, although I did take the class remotely. The exams were pretty much exactly like the homework, Sanchez held office hours after every lecture and responded to her email pretty quickly when I had questions. Her slides did have some typos but she corrected them as she went along. Sometimes her explanations were a bit vague but the textbook and the actual practice problems/homework, as well as the problems we did in discussion section, helped to clear things up. My main issues with this class was that there were a bunch of little assignments that we had to do and sometimes it could be hard to keep track of all of them, for example, I missed a participation quiz, but you drop the three lowest homework grades and the three lowest participation/quiz grades. My other gripe is that the midterm was three hours so we basically had two finals. Other than that, I liked the professor and I feel like I actually learned a lot in her class.

I'm glad I took this class with Sanchez. She's actually pretty nice and even though she had high expectations, it helped me be more engaged and actually really learn the material. I feel more confident going into 100B.

Prof Sanchez is kind, but very passive aggressive. If you have a drive to do all the work assigned to you, you'll be fine in this class — midterms/finals are usually based off of homework, participation quizzes, and problems done in class. However, I am NOT the kind of person who willingly does work no matter how much. The main struggle in this class is the sheer amount of work assigned, but the concepts aren't incredibly difficult if you pay attention (which I did not). Do everything (EVERYTHING) assigned (don't expect an easy A!) and you'll be fine, but doing everything assigned is the most difficult part - Sanchez routinely assigns 3-hour homework/participation almost every class.

She is the worst professor I have ever had. Even 1 is too high for this class. Avoid Sanchez !