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Class takes a sudden turn from "Didn't I learn this in middle school?" to somewhat difficult material.

He's okay. More willing to help you if you go see him in his office hours. Tests are really hard, his multiple choice questions are very ambiguous and doesn't really prepare the class for his mid terms. Use your stats. TA for help on the homeworks.

Hard exams, but not impossible - lets you have a lot of notes. Helpful when you talk to him in person and gives good, clear lectures, if a little fast.

Very organized lectures. Notetaking made easy. The book used was terrible though. It was most effective to get help during office hours, which the professor was willing to clarify ideas.

Good professor, very nice and very willing to help you. Goes slow in class so you understand and goes over material thoroughly. His multiple choice questions are a bit ambiguous, but other than that, he's great!

Class as a whole is ok. You lean a lot in class but his tests are out of no where. But if you go to him he will help you out a lot.

Good teacher, goes through material very well, if a little slow.

good teacher, boring class. it was hard to stay awake in lecture. he goes really slow.

A good teacher, SO much better than the last stat prof I had. Mr. Kollath seems like a very caring man and takes time to make sure we understand what is going on. I would recommend him if you need to take a stat or business math class.

covers the topics well, but can be alittle slow. always makes sure he answers questions

I absolutely hate this subject and this class. That being said, Jeff did an excellent job taking a foreign subject and teaching it so that it made sense. He made hell a little more liveable. If you hate statistics, you should take it from him because he will help you during his office hours and teach in a way that you will understand it.

Well, it's sort of hard to rate Prof. Kollath. He's a very nice man, willing to help you out during office hours. Yes, his lectures go very slow (you'll often only do one problem during the whole class period). You think you know it all, and then you get to the tests and it's kind of like, "What the f*%#?" I got an A, but I had to work for it.

Stats 351 was soooo hard for me, 352 was easier because you began applying concepts. For this subject I don't think one could find a better instructor. Jeff is wonderful at what he does and really knows his stuff!

Go to class and put some effort into the assignments and its pretty easy to get an A. Get help if confused on a topic. Only studied the night before exams and got A's on them. Study notes from class and old exams. Multiple choice on exams can seem tricky, but if you look at old exams you'll be ok. Write out problems are fairly straight forward.

Stats 351 was pretty interesting, it's not an easy class, you must work to get an A. Kollath is very good at explaining the subject; however, you have to practice, practice, practice to really understand it. The midterms and final were hard. Lab is easy and the homework is very easy, if you actually try, you will get an A for sure.

I absolutely HATE and am terrible at Statistics. Prof seems a bit arrogant at first and isn't very friendly, rather businesslike, but explains the material well, and makes the subject make sense. If you don't understand, go to his office hours, he'll make it work with your way of thinking. Definitely a good prof for stats!

The material is rather dry, but Kollath is deliberate and if you go to class you should be in good shape. Assignments are easy and help out your grade out quite a bit. Don't read newspapers during class...he freaks out.

Kollath is an excellent professor, one of the best I've had. Although statistics doesn't sound interesting, he sort of makes it interesting. He is also very knowledgable of the subject and can answer almost any questions. Though his tests were specific, they were very reasonable if you studied the material he gives you. Highly recommended!

Extremely nice, incredibly helpful, offers extra credit, allowed midterm re-take... I hate statistics and he made it easier!

Kollath is a really good instructor. He knows his material, and seems to truly care about his students. I would definitely recommend him over some of the other prof's for ST 351 and 352; if you have the choice have him as your lecturer.

Dr. Kolath............probably one of the most boring, dry topics to be taught, but he does an ok job...Midterms are SUPER HARD. I studdied my ass off for all of them and did really bad...so did about half the class. Deff. go to class because the clicker points are worth 30% of your grade.

its a hard class, but he does such a good job teaching it. go to class and do the homeworks! it wont be as hard if you use the practice tests he provides for the midterms and final. go to him for help, he will help you personally if you are having problems.

Kollath explains concepts so thoroughly that you'll want to die of boredom and/or laugh because it seems so easy. However, towards the end of the term the ideas all kind of blend together and can leave you confused on the tests. Pay attention even when you think he's gone over something for the 200th time. Assignments and clicker pts help LOTS.

Dr. Kollath is an excellent instructor. Although the subject matter is boring and can sometimes be difficult to understand, Kollath keeps it somewhat intereresting and he's great at explaining tough concepts. His class is structured well and he grades fairly, although sometimes his questions are really tricky.

I never thought I'd say this about a Statistics class, but I actually enjoyed his class, he makes things very clear if you attend every class. His assignments actually help you understand the content better so you do better on the tests. He tries to make it easy for you, if you go to class you'll get a good grade. Class Average was a B I think.

Really easy time in 351, 352 gets confusing fast! He is the only prof to get if you have the choice.

I took st352 in 4 weeks, and it was more clear with Kollath that in 12 weeks of 351 with the other person (who is a nice lady). Get points with homework (takes *hours*) and clickers, practice doing stats by hand for exams. Watch out for inconsistencies and poor T/A grading, and don't use 100% to answer the 'planet' problem

Good guy. If he was teaching a subject I actually cared about, he would be freaking phenomenal. As it was, he did a good job holding my interest despite the subject matter. And really helpful and nice, too.

Professor Kollath is one of the best I've had at OSU. I have absolutely no interest in stats, but he made the class clear and interesting. If you have the misfortune of taking a stats class, I highly recommend taking one with him. Some people in my class seem to think he's hard and unfair, but that's not the case. They're just unmotivated.

Very egotistical but course is extremely well designed. Material is relate-able and understandable.

Both Professor Kollath and the study of Statistics grew on me over the course of the term. I won't go so far as to credit him with my new-found zeal for Statistics, but he is an effective professor and an excellent test-writer. Helpful and accommodating outside class, within reason. Class may be superficial for students with stats backgrounds.

never had any stats class before so i was a little scared. esp after ppl saying how hard it was & expeect to take it twice. i managed to pass on the 1st try. i thought he was good. a little monotone but its stats. i think the HW and recitation points helped me pass. tests were long!

Not sure why people think he is so hard. Yeah the material may be difficult for some, but his tests are exactly like the samples he provides, and although the questions are tricky, they are fair. Lab and hw portions are ridiculously easy, and he is very interested in the material. He could not be any more straight forward

Prof Kollath is a well spoken professor. I'm not sure why people here say he's egotistical because I've never thought he was throughout my stat 351 and 352 classes that I had with him. The course can be a little challenging but show up to every class, pay attention, ask questions and do your homework. You should be fine.

Inflexible but helpful, lecture attendance is mandatory for understanding the material. Use of Stats software not found outside a university environment not helpful to job readiness

I had a very difficult time in this course and i will have to retake it. Hes a good proffesor, but i recommend studying every day for this class if you want to pass.

Very thorough notes. Pay attention in class, and you should be fine.

This subject matter can be difficult, but if you do all the coursework assigned and study the materials presented you should do fine. The instructor is very helpful and willing to answer questions.

Great professor! Only complaint was that the final was too long!

He was a teacher who gave you all the tools you needed in order to succeed. The class was very informative, but make sure to not fall behind. The tests are very very specific, so you really need to know the material. I am not a math person, so this was challenging for me. You are good if your good at math and interpretation of problems.

Really great teacher. He was quick to reply to E-mails and always helpful. Challenging class, but totally doable. Definitely do the practice problems, since the tests are tougher than the homework questions. I didn't get the text book, I just used the E-book that comes with mymathlab and I got an A.

I took ST 351 and 352 with Dr. Kollath a few years back, as a senior at OSU. Dr. Kollath is a very detail-oriented and conscientious professor, and I found his thoroughness in lecture very useful. I think I may have missed one class day throughout my two semesters, and did 80% of the practice homework problems. Those were key to success.

Kollath is a decent professor. He's a little dry and boring, but he's very concise and everything he says makes sense. He writes everything out very clearly and his lectures are always available online afterwards. BUT. DO NOT SKIP CLASS. It'll seriously hurt your grade since there are clicker questions. Tests are challenging, but not terrible.

There are lots of assignments, but they are very straight forward and don't take that much time. Definitely study for the tests because there are no extra credit opportunities. The tests heavily affect your grade.

FIRST AND FOREMOST- get a deep, deep grasp of the timelines, where resources are, and the time it will take you to absorb and complete. This material is what's HARD and the design of his class can feel VERY overwhelming at first. The pieces are all there, though- YOU HAVE TO USE YOUR RESOURCES.

This is an easy course provided you have a strong understanding of math or if you work through assigned material. The professor provides detailed notes, as well as practice problems and homework that models exam questions. The class is very structured, but the professor is not adept at explaining concepts that students find hard to grasp.

Did alright in both ST351 and ST351. He can put you to sleep in some lectures especially if you have his 8am, but he has clicker questions in lecture for easy credit. Be ready to study a lot of the practice questions if you want to do well exams.

Jeff is great at explaining relatively difficult topics in clear and concise ways. This is his greatest strength. His lectures have a great pace. Clicker questions keep everyone involved and paying attention. Pre-lecture "learning paths" were sometimes overwhelming as they were expected before 7am EVERY LECTURE. Stay ahead and no problem!

He's a little older and doesn't like when people are on their phones, but he's very knowledgeable and sets clear expectations. He's nicer and more patient in the 8 am class than he was in the 1 pm. His lectures are outlined well and the labs are pretty easy, but definitely go to class for the clicker points and in class assignments.

If you go to class and stay on top of the homework you will do great in this class. He explains concepts clearly and gives great examples to further illustrate them. A page of notes is allowed for the midterms and the final exam. The class is fairly easy if you put in some effort and ask questions right away if necessary.

He does a weekly webinar if you need extra help. There are five assignments using the R code, but the directions are very clear so it is not difficult. He uses Acrobatiq for learning paths which are semi-informative, but pair with the webinars and you will be fine.

I took his online course and it was very challenging. There is a great deal over work to do but he is very accessible to his students and will help you anyway he can. Any questions I had I could email him or post and he would respond very quickly. I took him twice.

He and the teaching assistants are helpful and help with any questions. There is a lot of homework, and the quizzes/exams can sometimes be difficult. Overall, he was great, and I was happy to have him for my second statistics class.

He is actually a really good professor and his exams and quizzes aren't that hard. He' s underappreciated, so that's why I'm on here to tell you that he is a really good professor. Plus he helps you out and wants you to do well in class.

Jeffrey has been a delight - which is saying a lot for an 8AM Stats class! He provides ample material to review for exams and assignments closely follow the homework. If you pay attention and review well, this class is a breeze. I don't know why some people dislike him. He's very sweet and obviously wants students to succeed. #JusticeForJeffrey

Jeff is honestly my favorite math teacher I have ever had. I have always struggled with math but he makes it fun as well as sets you up for success. He is very understanding and works hard to help you understand concepts.

The class work is pretty tough, but the professor is awesome. He will work with you and is very lenient if you just communicate with him!

I took this class during the pandemic so it was over zoom. Jeff modified the class before the term started so that we had 2 major projects rather than a midterm and final. He uses tophat and breakout rooms, which is a pain but he's a good lecturer. Responds to emails quickly and offers lots of help. If you follow the calendar, it's easy to pass.

Professor Kollath is really helpful if you reach out to him with questions about the material, and seems to genuinely want to help you master the course content. The quizzes and lecture worksheets are not too hard if you keep up with the readings /homework and lectures.

This class had a higher than average amount of reading, quizzes, and homework, but that created a buffer system w/ points. Kollath cares about his students and doesn't grade that strict. I was able to fail a few quizzes and still get a 98% in the class. I could even get points back on big quizzes when I argued my point with him. Cool guy.

Super nice and understanding. Gave really thorough lectures and everything that was in the lecture was going to correlate directly with the homework and quizzes/tests. Super straightforward which I loved and provided so many resources. Loved him!

A little dry in lectures but otherwise he's great! Everything is outlined very clearly, mini quizzes every class but he gives you all of the reading and lectures you need to do well. There are extra credit points on quizzes sometimes. He answers all questions in class. You teach yourself mostly, but he gives lots of supporting materials/assignments

Jeff is the best stats prof I've had at OSU. He is super understanding. He tried a new class structure with not midterm or final and instead a majority of our grades were based on quizzes at each lecture based on the previous reading. Grading criteria was super clear and he would give good feedback during lecture so you wouldn't lose points.

Professor Kollath let me into the ST-352 course late in order to fulfill my last requirement before graduation when I hadn't taken ST-351 before which was a pre-requisite. I took an accelerated version of the course over 4 weeks in the summer and while the workload was heavy, he provided exceptional teaching. Help was always available when needed

He doesn't lecture during lecture, he expects you to watch a recorded lecture before class. During each class you take a quiz and then due a worksheet. Not too hard, but annoying format. No midterms or finals, only 5 big quizzes but they are all on quizlet.

Dr Kollath is a good professor. If you do all of the required assignment beforehand it is a easy class.

Math is hard. That said Jeff works it to be easy, do the work, watch all the videos and go to the labs, youll pass. Hes very caring, when I said I didnt feel comfortable in a classroom of 200 people (high risk parents) he let me attend via zoom which I really appreciated

Jeff is a great professor, really nice and understanding. He will work with you as long as you communicate! He is really good at breaking down the concepts so that you understand/ follow along. I like that you teach yourself, then you know what you need to practice. I liked using Tophat & doing worksheets since we could apply what we learned

Prof. Kollath is one of the kindest professors I have met. The first week of taking ST351, I fell into the deepest depression I've ever experienced (unrelated). I missed multiple lectures and quizzes. I emailed Prof. Kollath and he was understanding, kind, and he genuinely seemed to care about my wellbeing. I ended up with an A.

I took this as an asynchronous e-campus class. Kollath doesn't do much hand-holding and I wish he had us learn a little bit more in R, but he gives a ton of resources for learning the material. I struggled with the material but through homework and using the resources provided I managed a B+.

I found Jeff's format of learning at home and quizzes and worksheets in class to be rather irritating. However, Jeff himself is super understanding and wants to help students succeed. I fully slept through class one time and since I didn't try to make up excuses, he let me complete all the in-class work anyway. Great guy overall.

The course is designed so you do all learning online through some extra paid content (that is nice quality imo) and then in-person is all quizzes with Top Hat plus R lab homework. Jeff is pretty friendly and checks in on students. He wants students to succeed and will let you know if you're making an error in the in-person homework.

The class was well paced and organized for an 8 week summer course. A lot of emphasis was on an online platform for homework. I did end up having special circumstances midway through the course and the professor was very accommodating and easy to get a hold of.

The class is hard but he wants you to succeed. Very easy to talk to and ask questions. Do the homework and watch the videos and you'll be fine. No giant test just a lot of quizzes, which makes it easy to earn points.