Under the patronage of the Dean of the University College of Ashur, the esteemed Assistant Professor Dr. Kazem Aboud Al-Majidi, the Department of Dentistry at the College held a scientific symposium on Saturday 5/11/2022 under the title (Introduction to Epidemiological Studies Biostatistics.) presented by Prof. Dr. Sulafa Khaled Al-Samarrai, a teaching staff in the Department of Medicine Dental Assistant, Prof. Dr. Ghassan Qassem Al-Lami, and a number of heads of departments, professors and students attended the lecture. After the lecture ended, the attendees' questions were answered.