Saweta, L.; Inthasingh, J.; Thawanhathaikul, C. . Compare Gold Bullion Trading Forecasts with ARIMA and ARIMAX Models: Keywords: the exchange rate of USD (baht), Nominal Effective Exchange Rate (NEER), SET index Leading Economic Index (LEI) and Dubai Crude Oil Price inverse index. j.Chalermkarnchana 2022, 9, 56.