In all honestly the class isn't horrible. Lecture doesn't really correlate to assignments at all but the material can be pretty easily self taught in my opinion. However there's no clear grading criteria at all and the class has a down curve. If you're looking for an UD PSTAT class that's on the easier side I'd still say to take this though.

I got scared when I read that someone got a 96.5% and got an A-, and at he beginning of the quarter he said that there was no grading distribution and he only handed out A's for people who put in a lot of effort. His lectures were kind of hard to understand and a lot of the stuff we learned in lecture was not applied in homework and mini projects.

Ruiz is one of the worst professors I have had. There is no structure in his class, half the time his assignments change, there is no clear rubric, and his lectures do not really apply to the homework and projects even though attendance is mandetory. Not to mention there is a down curve applied.

never care about your grade; lectures are useless; dont take his class if u have other choices

Avoid him!!! I got 96.5% in total, but I received an A-. It is very unreasonable. Avoid him if you don't want to down your GPA

Prof Ruiz was great, it was the first time this class was ever offered and he made it a good experience, super clear instructions and grading. He even allowed students to turn in assignments late (within reason). Grade was 80% homework and a group project instead of a final.

Graded very leniently and was clear with the structure of the class. lectures are asynchronous and kinda boring, but decent. Overall cool guy, pretty chill would recommend.

Professor Ruiz is a gem in the statistics department. It was his first time teaching this new course and he taught extremely well. The labs were created in such a clever way that you could learn while doing the lab and not have to teach yourself everything. Office hours were helpful -- 4x per week. I would take this class all over again if I could!

Ruiz is a great professor and he had a great structure. He was very clear in explaining the course concepts. Gave relevant examples. Answered Emails quickly and posted helpful lab explanations. The final was only 20% and 80% was Lab & HW. All in Python. HW & Final could be in groups and were very clear. Lab and HW content examples were interesting.

Had Ruiz for Winter 2021 and he was great with his explanations and overall very concise. We had weekly R labs, more intensive HW's completed in R, a MC midterm, and one final project. The class set-up was great, and the labs did a great job giving us practice with the code and giving us the skills required to tackle the HW's. Highly recommended!

Feels like he was student not long ago since he loves working with his own students. Material is indeed tough, but welcome to 120B. He makes it interesting to learn and will even go as far as clarifying confusing parts to quizzes/tests. He also loves what he teaches, and that comes across in his lecture segments. I'd 100% recommend for 120B.