Prof. Rojas was an extremely boring lecturer. He took forever going over very basic concepts, and didn't end up going through the entire syllabus (skipped the entire section on heteroskedacity). Overall, the class was extremely easy--no assignments, only two midterms and a final, all of which are fairly straightforward and similar to what was covered in class. The recommended textbook problems are significantly harder than what shows up on actual exams. He's very boring and wastes too much time answering student questions, but if you want an easy A, take this class with Professor Rojas.

Professor Rojas is very clear in his lectures and slides. He has a very good TA team so even if he is not available for office hours, his TA's are. He gives lots of practice midterms and questions and they are pretty similar to the actual tests. Not the easiest class but definitely the best professor to take it with.

Rojas is nice... but he's overrated. There's no reason to delay taking 103 just to take it with him. Like others have said, his tests are similar to the practice exams and homework problems that he assigns. However, his tests are really, really time crunched.

I enjoyed Rojas' lectures. I am an econ major so I enjoyed to be able to have a class that is more applicable to real life situations than theory. I attend school full time and also work 30 hrs per week which makes the whole school schedule difficult to balance. Thus, any student who puts a little bit of effort will be able to get a good grade in this class. Like the other person mentioned, exams are very similar to practice exams/homework problems. It is a little pressed for time (practice to solve the problems fast). The MC questions are a little more conceptual. I think that he was one of the best professors that I had so far. He actually teaches the material.

Rojas is legitimately one of the best professors at UCLA. He is very neat and organized during lectures. His tests are extremely fair. All of the material comes straight from the book. If you read the textbook and understand it, then you will do very well on tests.

His midterms are a bit time sensitive and a lot of the problems require tedious work. However it is not a difficult class. I've noticed a lot of people complain about not doing well, but then they admit they never open the book. As a math major I think this is a bit ridiculous. If you want to do well in the class open the book and read it. Rojas has less than 3 hours a week to cover the material he needs in a 400 person lecture hall. You can't expect him to explain every detail.

You don't really need to go to lecture, or lab, or learn STATA (outputs on exams are pretty common sense once you read the book). Great class and very useful.

Rojas has a specialization in statistics, which is why he is really great for teaching this class. If you had a hard time in Econ 41, then it'll be difficult in this class too because in delves into the theory and practicality of the topics from 41. I had a solid foundation in stats and therefore didn't have much trouble with the subject matter. 103 heavily focuses on regression and variable testing, such as t-tests, F-tests, chi-tests, etc. Rojas does not use slides for the main lecture, rather goes at a slower pace by writing it all out on the board. While the lecture notes were clearly provided, the symbols and equation styles might make it hard to understand, however, if you do your hw, you will understand where everything is coming from. You do not need to memorize any equations because we are provided with a formula sheet that includes nearly everything you need to know. The exams test whether or not you know what and how to use a particular tool, and summarize the significance of it - therefore, the word problems were fairly decent if you did your hw and practiced on some practice tests. The multiple choice questions mostly test theory, and are a bit more difficult, but certainty not impossible. Two midterms (25% each), had 5 word problems, 5 MC. Final (50%) had 10 word problems and 10 MC. The lab lecture focuses on Stata tools and uses for the topics learned in lecture. Stata is easy to learn if you go to discussion and work it yourself along with the TA, and use the Stata book for hw guidance.

Econ 103 is a class a lot of people leave last, and Rojas is usually the recommended teacher for the course, but the class itself is complicated if you don't have a solid understanding of stats. I had a horrible experience and deadbeat professor for 41 and still managed to pull through. The curve was helpful, but then again it can go either way with these things.

I recommend that you download all the slides from the lab lecture and the TA sites and go over them three times a day--maybe after every meal? Rojas is an excellent teacher; the lectures were at a good pace until the end where he tried to squeeze a whole chapter and a half and then used it for the final! Otherwise, it is a fun class if you enjoy math and stats, but I would use every source you could get your hands on!

Professor Rojas seemed like the obvious choice for Econ 103, but I was dead wrong. At the beginning of the quarter he announced that he would no longer be collecting homework for a grade, and changed the grading format to 25% for two midterms (50% total) and 50% on the final. He taught the material at a good pace at first, but then after week 5 he started accelerating out of nowhere. He would attempt to hold review sessions, but would never be able to because of "scheduling conflicts." He does not respond to any e-mails, and barely puts in effort outside of the class for students to understand the material. On the last day of lecture, he used the last half of the class to cover a whole chapter of new material which he said would show up on the final.

Best professor in the Econ department. He is clear, extremely organized, and so nice/approachable at office hours or after class. He makes such difficult material easy to understand, and is really fair on his exams. The average on the first midterm was a 64% but he said it was lower this quarter because this quarter he did not count homework as a grade, so many people just looked at homework solutions instead of attempting the homework first and then checking if they did it correctly. So a suggestion would be to do the homework on your own first and then check solutions he posts later. You have discussion problems, homework problems, and chapter review questions to work on every week, and although they are not collected for a grade, it can be very time consuming. Midterm 1 is 25%, midterm 2 is 25% and final is 50%. Great class! Just wait to take 103 with Professor Rojas, he usually teaches in winter quarter and he is amazing!

Very decent professor, will take his class again!!!