Al Fawzan, Fawzan Abdul Aziz - In: Journal of Economic and Administrative Sciences 31 (2015) 1, pp. 20-29
Purpose – The purpose of this paper is to examine volatility and the weak-form efficient market hypothesis (random walk) of world spot crude oil market. Design/methodology/approach – The study uses the generalized autoregressive conditional heteroskedasticity (GARCH-M), exponential...