DESY PURWATI; SONIA DIAN PUSPITA DEBATARAJA; PUTRI KHUMYAROH; REJEKI SIHITE; SUDIANTO MANULLANG; PUTRI MAULIDANA FADILAH. Statistical Modeling of the Relationship Between Sleep Quality and Students’ Learning Effectiveness and Concentration Using the Stratified Random Sampling Method. Comprehensive: Jurnal Ilmu Pendidikan dan Keguruan, [S. l.], v. 2, n. 5, p. 366–374, 2026. DOI: 10.65118/comprehensive.v2i5.58. Disponível em: https://comprehensive.presisipustaka.co.id/index.php/i/article/view/58. Acesso em: 12 nov. 2026.