ZARAGOZA ALVARADO, Guillermo Alejandro. Descriptive statistics manual. Definition and exercises. [s.l.] : AG Editor,2025. DOI: 10.62486/978-628-97230-1-4. Disponível em: https://books.ageditor.org/index.php/books/catalog/book/978-628-97230-1-4. Acesso em: 8 dec. 2025.