COMPARISON OF SINGLE EXPONENTIAL SMOOTHING METHOD WITH DOUBLE EXPONENTIAL SMOOTHING METHOD PREDICTION OF SALT SALES

Predicting the quantity of product sales in future aims to control amount existing stock, so that shortage or excess stock can be minimized. When predicted accurately, fulfillment consumer demand managed a timely manner and company's cooperation with consumers is maintained properly company avoid losing consumers. This study analyze accuracy predicting salt using Single Exponential Smoothing (SES) method compared Double (DES) method, more accurate will obtained for sales. The results testing comparison level done by evaluating error value forecasting Mean Absolute Percentage Error (MAPE). lowest MAPE result SES when parameter α = 0.054 7.932% which means very accurate. Whereas DES 28.145% while 0.845 β 0.214 reasonable. Based on two methods above, use