Bustamante-Valdés M, Díaz-Levicoy D. Validation of a training proposal on statistical graphics for 5th and 6th grade students of multigrade rural primary school, Chile. epsir [Internet]. 2025 Sept. 19 [cited 2026 Nov. 12];11:1-21. Available from: https://epsir.net/index.php/epsir/article/view/1918