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Modeling exchange rate volatility using GARCH models
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Modeling exchange rate volatility using GARCH models
Basma Almisshala, Mustafa Emirb
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Various forms of statistical models have been evolved to capture the volatility effect. These models are often applied for estimating the degree of the exchange rate instability.
Autoregressive Conditional Heteroskedasticity-ARCH by Engle( 1982), had been modelled as the serial correlation of returns throughout the inclusion of conditional variance as a function of the past errors and changing time. This had been done during Engleâs attempts to explain the dynamic of inflation occurred in the United Kingdom.
Generalised GARCH models had been developed independently by Bollerslev (1986) and Taylor (1986) respectively.
Bollerslev(1986) added to Engleâs model by inserting a long memory and created a more flexible lag structure by adding lagged conditional variance to the original model.
The use of ARCH model in the exchange rate was first applied by Hsieh (1988) to compute daily data of five-currencyâs exchange rates.
Friedman and Stoddard (1982) had used non-standard techniques to uncover the underlying patterns. Increasingly, the volatility in exchange rates became an interest for many researchers through using Heteroskedasticity models to study a higher volatility time series of currency exchange rates because they are considered much favorable against other stable variance models. Below is a brief on these studies in different regions.
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