PERBANDINGAN PREDIKSI PRODUKSI TIMAH MENGGUNAKAN MODEL SIMPLE MOVING AVERAGES, WEIGHTED MOVING AVERAGES DAN DATA AKTUAL DI PROVINSI KEPULAUAN BANGKA BELITUNG: COMPARISON PREDICTION OF TIN PRODUCTION USING SIMPLE MOVING AVERAGES MODELS, WEIGHTED MOVING AVERAGES AND ACTUAL DATA IN BANGKA BELITUNG ISLANDS PROVINCE. Fraction: Jurnal Teori dan Terapan Matematika, [S. l.], v. 3, n. 1, p. 29–35, 2023. DOI: 10.33019/fraction.v3i1.40. Disponível em: https://fraction.ubb.ac.id/index.php/fraction/article/view/40. Acesso em: 30 mar. 2026.