Penerapan Metode Single Exponential Smoothing Untuk Prediksi Penjualan Bahan Bangunan

UD. Karya Mandiri is a business engaged in the sale of goods, especially building materials contained Main Asahan Chart. As for sells special such as coconut wood, zinc, iron, nails, wall paint, brickwork, ceramics and others. Based on sales data at experienced an increase or decrease every month. This makes has problem controlling inventory that cannot be predicted properly because it only calculates directly amount left warehouse then reports to owner orders material based conventional assumptions. To avoid reduce level loss future, needs forecasting system. method Single Exponential Smoothing (SES), which can estimate over time with forecasts request. The results final study this system predict materials, namely July 2022 period broti 2177.18 (kg) MAPE value 15.41%, wood 2864.10 9.33%, zinc 532.16 ( kg) 14.54% nail 435.69, 15.91%