ANALISIS PERBANDINGAN METODE DOUBLE EXPONENTIAL SMOOTHING DAN DOUBLE MOVING AVERAGE PADA KASUS PERAMALAN PENJUALAN KOPI BUBUK DI LOPO MANDHELING COFFEE. JSSR [Internet]. 2025 Aug. 28 [cited 2026 Aug. 3];8(3):4688-94. Available from: https://goretanpena.com/jurnal/index.php/JSSR/article/view/4199