Performance Comparison of Simple Linear Regression and Single Exponential Smoothing Methods for Forecasting Nickel Production at PT. Jaga Aman Sejahtera Sulfiani Putri, Agunawan, Nurul Istiqamah Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Vol. 10 No. 1 2025 DOI 10.33772/jfe.v10i1.1010