Abstract
The aim of the article is to compare the estimates of the volatility obtained from the parametric models: the GARCH and the SV with the estimates based upon the Realized Volatility approach, whereas the estimates from the RV are obtained from the data of different frequencies. The data sample consists of the WIG20 index and the EUR/PLN exchange rate and covers the hectic crisis period. Hence, the presented results can be viewed as an extension of the results of the studies presented up to date.
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