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Without a prior statistics background you may need to spend a lot of time outside of class to teach yourself.","source_url":"https://www.ratemyprofessors.com/professor/2127807","quality_rating":1,"difficulty_rating":4},{"observed_at":"2026-09-07 16:54:34.137992+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTMxMzE3ODM4","source_instructor_id":"rmp:2127807","instructor_name":"Anru Zhang","course_label":"STAT309","course_id":"MATH/STAT 309","course_uid":"course_2a00c702ff402614a950606e","review_date":"2019-01-29 22:33:52 +0000 UTC","comment":"Prof Zhang was very ok. He goes over homework problems in the beginning of class, but he won't help with homework in his office hours which is annoying. The class was quite difficult, and he often times got lost in his own work or got confused in his own problems. The lectures were not always clear, and I felt like I had to teach myself a lot.","source_url":"https://www.ratemyprofessors.com/professor/2127807","quality_rating":2,"difficulty_rating":4},{"observed_at":"2026-09-07 16:54:34.137992+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTMxMjMzODkz","source_instructor_id":"rmp:2127807","instructor_name":"Anru Zhang","course_label":"STAT309","course_id":"MATH/STAT 309","course_uid":"course_2a00c702ff402614a950606e","review_date":"2019-01-09 23:27:10 +0000 UTC","comment":"Prof Zhang is a really nice guy. He can be a bit confusing with the way he explains material. He offers help on the homework problems before lectures so that is a bonus. The class seemed to lack structure so be prepared to jump around the textbook. 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