ANALYSIS OF DEMAND FORECASTING ON THE CLEAN WATER NEED IN CLEAN WATER MANAGEMENT COMPANY (PPAB)

Forecasting, Moving Average, Exponential Smoothing, Trend Projection, Mean Absolute Deviation (MAD), Mean Square Error (MSE), Mean Absolute Percent Error (MAPE).

ABSTRACT

The purpose of this study is to analyze the level of clean water sales forecast for approximately one year ahead by using the best analytical method, and then to formulate strategies that can be applied by Clean Water Management Company (PPAB) in Rokan Hulu District. The method used is the time series method that is moving average. Exponential smoothing, and trend projection. Then determine the best error rate of the method used through several approaches: mean absolute deviation (MAD), mean square error (MSE), mean absolute percent error (MAPE).

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