The Exchange rate reflects the ratio at which one currency can be exchange with another currency, namely
the ratio of currency prices. It is the value of a foreign nation’s currency in terms of the home nation’s currency. It
also specifies how much one currency is worth in terms of the other. A correct or appropriate exchange rate has been
one of the most important factor for the economics growth in the economies of most developed countries, whereas a
high volatility or inappropriate exchange rate has been a major obstacle to economic growth of many African
countries of which Nigeria is inclusive. Volatility plays a very important role in any finacial market around the
world and it has become an indispensable topics in financial markets for risk managers, portfolio managers,
investors, academicians and almost all that have something to do with the financial markets (Richard, 2007). The
consequences of substantial misalignments of exchange rates can lead to out contraction and extensive economic
hardship. Moreover, there is reasonably strong evidence that the alignment of exchange rates has a critical influence
on the rate of growth of per capital output low income countries (Isard, 2007). Therefore, forecasting accurately
future volatility and correlations of financial asset returns is essential to derivative pricing, optimal asset allocation,
fortfolio risk management, dynamic hedging and as an input for value-at-risk model. Forecasting is also a critical
element of financial and managerial decision making (Majhi and Sahoo, 2009)