Hoang Nam Hai, Dinh Thi Phuong Anh, Nguyen Hoang Hai, and Pham Huyen Trang. 2016. “ASSESSING PRIMARY SCHOOL PUPILS’ COMPETENCE IN UNDERSTANDING STATISTICS”. UED Journal of Social Sciences, Humanities and Education 6 (1), 120-26. https://doi.org/10.47393/jshe.v6i1.264.