In this paper, we compare the performance of volatility models for oil price using daily returns of WTI. The innovations of this paper are in two folds: (i) we analyse the oil price across three sub samples namely period before, during and after the global financial crisis, (ii) we also analyse...

In the energy-growth nexus, due to structural change that cannot be accounted for in the linear model this study considers the possibility of the nonlinear model. Using dataset for fifteen countries in Africa for the period 1980-2010, we found that linear model has misspecification error, thus,...