دراسة قياسية لمبيعات وقود غاز البترول المميع (GPL)‎ : دراسة حالة مؤسسة نفطال

الملخص EN

This study aims at forecasting the sales of GPL to the East Naftal Corporation using SARIMA models.

Monthly data were used for the period from January 2012 to December 2016.

The results of the sales chain estimate showed that the variation of errors is not constant over time.

Which can track the behavior of time-varying variations.

The results also showed that the ARIMA (1,1,2) -GARCH (0,1) model was the best model that could represent the GPL sales chain, with future sales forecasted from January to July 2017