Penerapan Metode DESB dan EOQ untuk Prediksi Penjualan dan Persediaan Mobil
Abstract
PT. MG as a car sales dealer has problems in the inventory process, that may disrupt the sales process. To solve the problems, PT. MG needs a forecasting system to estimate car sales and supplies. The goal of this system is that the company can predict car sales and determine the optimal supply for the upcoming period. The system was built as a web application, and use the Double Exponential Smoothing forecasting method from Brown with an alpha value of α=0.5 which has the smallest forecast error according to the MAD (Mean Absolute Deviation) indicator. To optimize inventory planning, we use Economic Order Quantity (EOQ) method to optimize supplies planning. The data used in this study are historical sales data for the last 2 years. The system was tested using black-box and white-box testing. The results of this study indicate that the system is fulfilling its requirements and are useful for predicting PT. MG sales and inventory planning in the coming period.
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DOI: https://doi.org/10.37905/jji.v3i1.10384
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