examines the consistency, persistency, and severity (degree) of volatility in exchange rate of Nigerian currency (naira) vis … were used to examine the degree or severity of volatility based on the first difference, standard deviation and coefficient … of deviation estimated volatility series for the nominal and real exchange rate of naira vis-a-vis the U.S dollar. The …

estimation of volatility models with breaks as against those of GARCH models without volatility breaks and that the introduction … significant events in GARCH models in volatility estimation of key asset prices. …This paper examines exchange-rate volatility with GARCH models using monthly exchange-rate return series from 1985:1 to …

/dollar exchange rate and the volatility in the yen/dollar markets. Using newly released data on Japanese foreign exchange intervention …, our global GARCH estimation suggests that Japanese foreign exchange interventions between 1991 and 2002 had the intended … effect on the same day, but at the cost of higher exchange rate volatility. Testing for the robustness of this finding we …

/dollar exchange rate and the volatility in the yen/dollar markets. Using newly released data on Japanese foreign exchange intervention …, our global GARCH estimation suggests that Japanese foreign exchange interventions between 1991 and 2002 had the intended … effect on the same day, but at the cost of higher exchange rate volatility. Testing for the robustness of this finding we …