Simple Bussiness Time-Series sales forecasting, using SARIMAX/TARCH Model; Starting from simpler models (AR, MA, ARMA, ARIMA, SARIMA) and ARCH, GARCH, GJR-GARCH model; extracting insights, forecasts and pointing out some possbile bussiness intelligence prescribtions; P.S; this data is for demonstration, real life situations have more details and of course higer levels of impacts
