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All Journal BUDGETING : Journal of Business, Management and Accounting
Adhila Dyah Nirmala
Universitas Muhammadiyah Jember
Humanities Social Sciences

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Evaluasi Peramalan Penjualan dalam Menentukan Besaran Produksi yang Optimal pada Perusahaan Umum Daerah (PERUMDA) Perkebunan Kahyangan Jember Adhila Dyah Nirmala; Achmad Hasan Hafidzi; Yusron Rozzaid
BUDGETING : Journal of Business, Management and Accounting Vol 5 No 1 (2023): BUDGETING : Journal of Business, Management and Accounting
Publisher : Institut Penelitian Matematika Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/budgeting.v5i1.6885

Abstract

The purpose of this study is to find out the best forecasting method to overcome the gap between the demand for roasted coffee desired by consumers and the production fulfilled by the company. The data used is secondary data in the form of reports on the production and sales of roasted coffee Perumda Kahyangan Jember Plantation. The sample used in this study was 24 sales data of roasted coffee per month with purposive sampling techniques. The forecasting model used in this study is Time Series consisting of Naive, Moving Average methods, and Exponential Smoothing with a Mean Absolute Percentage Error (MAPE) measuring instrument as a standard reference for measuring forecasting errors. The results showed that the 4-month Moving Average method is the best forecasting method. This is based on the measurement of the forecasting error of the MAPE value of 13%. The lower the percentage error in MAPE, the more accurate the forecasting results. From the results of the study, it can be concluded that the Moving Average method for a period of 4 months can be used as a reference for companies in determining roasted coffee production in the next period, which is 2,248.75 kg. Keywords: Exponential Smoothing; MAPE; Moving Average; Naive; Forecasting; Time Series
Co-Authors Achmad Hasan Hafidzi Yusron Rozzaid