[{"observed_at":"2026-09-07 15:58:01.601642+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTI1ODA3Nzg4","source_instructor_id":"rmp:1357778","instructor_name":"Yazhen Wang","course_label":"STAT709","course_id":"MATH/STAT 709","course_uid":"course_3aa77a7c307c944aec9fad7e","review_date":"2015-12-22 23:21:16 +0000 UTC","comment":"This is a very hard class, but Wang was an amazing professor! He always explains difficult material in a very clear and intuitive way, and tests are fair. If you have the choice, take his class!","source_url":"https://www.ratemyprofessors.com/professor/1357778","quality_rating":5.0,"difficulty_rating":4.0}]