Lastre, David, Melanie Paez Santana, and Olga López Tumbaco. “Statistical Analysis of Contingency Tables and Square Chi to Measure the Migration Flow in Ecuador in 2018”. Ecuadorian Science Journal 3, no. 1 (March 31, 2019): 23-30. Accessed April 20, 2024. https://journals.gdeon.org/index.php/esj/article/view/24.