Although the class itself was not horrible, Rojas is not a good professor. He gives zero guidance for what will be on exams and only offers online office hours on Zoom. He gave two practice midterms from many years ago that were mostly math. The midterm had hardly any math on it and was mostly analyzing graphs, having to know what certain R outputs are showing, and some definitions from the notes on certain concepts. The final was basically the opposite and had a lot of math, definition-based questions, no graphs, and not a lot of R code. It was mostly focused on indicator variables and how to solve problems involving them. Although this is mostly just subtracting two equations from one another and is not super difficult, I feel like no one would have expected the exam to look like this after the midterm. The only reason I did well was because I had a great TA who gave us advice on what to study and was super helpful as well. I would suggest going to lectures. He does not record them or do Zoom lectures, and he tends to talk more about topics that he tests on in class and goes into more detail, which helped me understand things a bit better. I would suggest taking this class with someone else if you can.

really nice and smart prof but he didn't even give us a practice final... and didn't inform us we weren't going to be given a practice final until someone emailed their TA and told the rest of the class. midterm was completely unlike the homework. notes are full of information that isn't going to be tested. the project (a 30% of your grade) is graded on completion (thank god) because our TAs (god bless them) tried their best to help us and pretty much gave up and told us to use chatgpt to check our code

this class killed my 4.0 gpa. lectures are not recorded. 2 group projects with R but you will struggle unless you are already okay with R

Dont take Rojas unless you absolutely have to. He bascially just reads off the lecture notes during the lectures, which is extremely confusing. He only gave one practice test for midterms and finals, which are pretty much irrelevalant from what actually appeared on the test. Both midterms and finals were quite hard:( However, the group project was graded pretty leniently which was the only good thing about this class.

He changed the structure of this class, there are now 2 projects worth 20% each, a midterm worth 20% and a final worth 40%. He does not give much practice material so just make sure to ask the TAs to give you more practice problems, some give out additional old practice problems.

I really liked Professor Rojas. Although I had taken statistics and probability before, I never truly grasped the concepts until this class. I think he did an excellent job of explaining the material clearly. We had two group projects, which were time-consuming, but they helped deepen our understanding of the content (each project accounted for 20% of the final grade). The midterm (20%) and final (40%) exams were challenging and built on what was taught in class. To succeed, you really need to understand the material as there is also no cheat sheet. On the positive side, the projects were graded leniently, and he only curved grades upwards.

Overall, I thought he was very nice and a good lecturer. I would take another class with him.

Rojas is a great lecturer, learned alot in this class. Projects made up 40% of our grade and everyone basically got a 100% on them. The only problem this class had was that the exams had a few random questions he barely ever touched on and his practice exams were nothing like the actual exams. Most exam questions were very easy however.

EHH. The only two plus's is that practice exams match the level of the actuals, and that he has lecture notes.

Class is not hard nor easy, but he taught all material without any order. It was very difficult to review the materials without any orderness.

Any positive reputation this professor had in the past is completely gone. He has completely checked out as a teacher this year and doesn't care about anyone. You will never get an email response. You will waste 40 hours a week on homework working on unrelated questions. He said we will be tested on R studio and coding, but not a single piece of code was needed for any of the tests. We started with the ability to take tests using R studio, but by the second midterm we were not allowed R studio, limited notes, testing via respondus, and a webcam proctor in addition to testing. While previous reviews say there is a curve, there really isn't. I bombed the first test because I studied to be tested on code. I got B and above on midterm and final. Raw score 79% because of the first exam, C+ as final grade. So basically no curve, couldn't even bump me to a B-. Students were so frustrated with him the entire class wrote a formal letter of complaints to the head of the econ department. One student went as far as chewing him out during one of the class sessions. The material isn't that hard but he made it a very toxic learning environment.