GARCH model estimation explains volatility clustering in S&P 500 returns through conditional variance, likelihood iteration, persistence, and risk-desk applications.
vector autoregression explains how inflation and unemployment interact through lagged feedback, coefficient matrices, and impulse response functions with confidence bands.
UK economy growth remains positive but constrained by weak productivity, post-Brexit trade frictions, high debt, energy costs, and persistent inflation...
Cointegration and Engle-Granger Method tests whether non-stationary economic variables share a stationary long-run equilibrium instead of a spurious trend relationship.
Granger Causality tests whether past oil-price movements improve gasoline-price forecasts after gasoline’s own history is included in the time-series model.