Rojas is a great professor. He really cares about his students well being and if they understand the content. He taught straight from slides and lacked a little clarity towards the end of the course, but it wasn't too bad. Make sure to do his weekly homework and readings on mindtap which will help you understand the material. I didn't go to class week 9 and often was distracted during his lectures but still got an A+. 24/25 on both midterms and a 58/70 on the final. He is a dry lecturer so make sure you stay awake.

I felt he was a really concise teacher and though us exactly what we needed to learn.

Selling textbook A Brief Course in Mathematical Statistic by Elliot A. Tanis and Robert v. Hogg 1st edition. ISBN **********. Text ********** or email *************

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!

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.

Professor Rojas is so boring!! His lectures are not engaging and he isn't very clear on challenging subjects. His tests are also very hard.

AVOID ROJAS AT ALL COSTS!!!!!!! HORRIBLE BUT HORRIBLE LECTURER, HUMAN BEING (and class)... Every exam keeps getting harder and harder and the final is 70 QUESTIONS LONG...
However if you DO have to take it and rojas is your only choice then BUY mindtap even if its not required. Midtap has a lot of multiple choice questions per chapter (like over 100 questions) and you can use them to practice for the exams.
He used to make mindtap mandatory but now its not so really buy it and practice practice practice EVERYTHING!!!
His final IS CUMULATIVE so beware and practice a lot especially the 2nd half material!!!

Professor Rojas was an extremely boring lecturer. If you take this class, just review the slides on your own time and don't bother going to class. He lectures painfully slow, and spends much longer than is honestly necessary to learn the content. He also requires that you purchase MindTap.

Professor Rojas never had the decency to respond to any of my emails. I always had questions and he never helped. He was useless, my TA was fantastic.

Definitely try to take Econ1 with Rojas if you can! He's a super kind and helpful professor, although a bit dry since all he really does is read off his slides in class. That being said, there's really no harm if you miss a few classes since everything will be on the slides he posts. He gives sample midterms and finals before each exam and he's extremely helpful if you go to his office hours as well. For this quarter we did not have to buy Mindtap which definitely saved a lot of money since I just read a free pdf online, but also made it so that you really need to do well on the midterms and finals (25, 25, and 50% of your grade respectively) because there are no other assignments in the gradebook to bring your grade up. But overall as long as you carefully study the powerpoints and don't fall behind the test are extremely straightforward. Highly recommend this class.