Using Gretl, I apply ARMA, Vector ARMA, VAR, state-space model with a Kalman filter, transfer-function and intervention models, unit root tests, cointegration test, volatility models (ARCH, GARCH, ARCH-M, GARCH-M, Taylor-Schwert GARCH, GJR, TARCH, NARCH, APARCH, EGARCH) to analyze quarterly time...

In this article, we have tested the correlation and covariance relationships that the natural logarithmic yearly returns of the macroeconomic variables in terms of personal consumption expenditures, gross private domestic investment, net export of goods and services and government consumption...