This class was terrible. Professor Hahn is the one of the worst professors at UCLA. His lectures were extremely unclear. He briefly goes over a topic and expects you to understand it without any further explanation. His homework and practice exams were extremely easy in my opinion, but they were no help in preparing for his ridiculous exams. The exam scheme is 70/30 or 95/5 with the final being heavier if you get a better score. The exams were so poorly timed, he was encouraging students to guess towards the end. The mean for the final was a 28/50 which should give you some idea how ridiculous this class was. Don't take this class if you have the option.

PLEASE READ! For the sake of your path at ucla, do not take this class with this prof unless absolutely necessary. And i mean that you'd have to stay an extra quarter if you didn't take it. Take classes over summer, this prof is actually the worst prof i've ever seen with my two eyes. He warns you about how the second half will ramp up, but all he does is go through content through notation and make it very hard to learn in lecture. I watched every lecture back, did every hw problem, did every practice exam, and yet I still needed to guess on 60% of the final because he cuts your time so even if you knew how to solve every problem, you'd need to do so in such a rushed manner, and you still wouldn't be able to get through every problem on time. I've never been so afraid of failing a class, and I can't believe I almost did while actually trying to learn and master the content. Leaving the final, almost every person i talked to said it depends on how well people guess, which in my opinion, shows how his exams don't target mastery at all, but rather how well you can skip steps in the math and come across the answer. Please for the love of god never take this class, this prof needs to be fired.

Didn’t go to class but was basically remedial ap stats plus a bit of stuff like central limit theorem. If you do fine on the practice tests expect to do fine overall. Our final was harder than the practice tests but the class curve seemed accurate.

Absolutely horrible professor - Doesn't care about his students, is oddly cruel to questions asked, and does not care about how much students understand information. Highly suggest avoiding taking 41 with Hahn if you are even a little unsure of your math skills - also midterm is 31 questions, 1 hour final is 51 questions 2 hours. Final average was 50%.

Mr Hahn’s Econ 41 was difficult but very manageable. In my opinion, the midterm isn’t too bad. The homework and practice midterm seem to represent the exam pretty well. It’s similar to stats 10.

The main difficulty came from the final. The professor states the main difficulty comes from lecture 10, which involves integrals, but what he didn’t mention was that one chapter out of the 14 we learned would encompass almost half of the final exam questions. And most of these questions involve you taking three separate integrals to find variance. He also made the final two hours and didn’t allow scratch paper.

That being said, the reason I stated that this class was manageable was because of how Hahn grades. The top thirty percent will get between an A+ and A-. The 40 percent after will get between a B+ and B-, etc. I think that this makes the class very fair because you don’t have to get As on exams, rather just be in the top 30% of your class.

I also want to include that part of the difficulty comes from the students themselves. Barely anyone shows up to lectures, discussions, and the professors office hours (he has two a week). Econ 41 is a difficult course regardless of what teacher you take (since they all collaborate to make exams), and if you want to succeed you have to at least put in the bare minimum of going to lectures. If you go to lecture and go to discussion, you are already putting yourself above 80% of the class. This isn’t a course you can cram study for, concepts build off one another, so put yourself in the advantage.

so hard, so ridiculous

As a teacher, Professor Hahn was mediocre. His lectures were dry but got to the point. Other than a couple of things he mentioned, you don't really even have to go (also they are recorded). His slides and homeworks covered the content well enough.

However, everything else about this class sucked. First, the grading scheme is atrocious. 95% final 5% midterm or 30% midterm 70% final.
The practice tests he gives are not representative of what is on the tests. He doesn't provide past exams. I think the midterm was manageable despite this, mean was a 71.
The final was one of the worst tests I've ever taken. He only gave us 2 hours and the questions were substantially harder than any practice he gave. It's not even that the content was hard, he just managed to make very difficult questions. The average was a 55% and only 10 people (out of 215) got an A on it.
The silver lining to all this is that he curves the class so that 30% end with an A. and another 40% with a B. I was curved from a B- to an A.
A lot of times I think these reviews are too harsh, but in the case of Hahn avoid taking this class with him if possible. I think the curve makes it manageable to pass, but if you're someone who wants to succeed because they know their content well and not from an insane curve, I'd recommend taking this class with someone else.

Trust me, if you choose this class, you are going to fail. The test is extremely hard, and you will not be able to get prepared by doing homework. In fact, I did all the homework, but I still feel so confused when I look at the practice exam. I understand this is a weeder class, in which the professor wants to weed out all the dumb ass in the class. However, the professor managed to do this in a way that leaves no room for a dumb ass like me to work hard and get a better grade(because there is hardly any practice available). Unless you are planning to apply for a regular econ major instead of a Business econ major, I suggest you pick an ECON 41 with a higher rate of A and A-.

Honestly, Professor Hahn isn't as bad as I thought. He tends to digress and elaborate on topics, which for some people can become confusing, but I enjoy his class because the materials are easy to understand. No cheat sheet for midterm or final, but it is durable because it has the least content to memorize out of all the ECON classes I have taken. I was also taking ECON 11 with Surro along with this class. The midterm was way easier than the final, I got 100% on the midterm and got 2 questions wrong on the final. Also, you have to buy the specific type of calculator he wants, which costs about $10 on Amazon. I also have the best TA ever and he helped a lot in summarizing the lecture, clearing up my confusion, and providing additional practice. You will be fine as long as you study, understand the homework problems, and know the concepts well.

After reading a lot of the past reviews, I was a little nervous going into this class due to the fact that if I failed, I would get kicked out of the major. However, as long as you keep up with the lecture material and constantly try the hw problems and practice exams, you'll be fine. I honestly didn't even show up to a lot of the lectures because the slides and lecture notes were good enough. I would say along with memorizing the equations and stuff, the best way to do well on the exams is probably going to be figuring out the simplest way to solve each hw problem and practice exam questions. You'll get similar style questions on the final and midterm just worded differently which might throw you off but I would say the hw and practice exams definetly help.