Probability and Statistical Inference
The material is definitely challenging but practice exams and quizzes are very similar to the actual exams, especially if you have a lot of the practice materials. Daily quizzes are annoying though.
Overall great class - a lot from AP Stats. You need to stay on top of the material and study for the quizzes that are every class. If you don't, your grade will drop. Quizzes were more of a pain than the tests. Go to office hours to get help with the homework otherwise you will lose points there too.