What is "s", volatility of volatility??

#1
I have read about this in one reasearch paper where Maximum likelihood estimate and Two scale realised volatility have been calculated based on s, as a parameter. For a given data, volatility can be found. But how can it and this "S" be used as parameter for estimation. pls help....
 
#2
I have read about this in one reasearch paper where Maximum likelihood estimate and Two scale realised volatility have been calculated based on s, as a parameter. For a given data, volatility can be found. But how can it and this "S" be used as parameter for estimation. pls help....
I could n't get the query. Can you give reference to that research paper ??
 
#3
I have read about this in one reasearch paper where Maximum likelihood estimate and Two scale realised volatility have been calculated based on s, as a parameter. For a given data, volatility can be found. But how can it and this "S" be used as parameter for estimation. pls help....
Sidhu,

s stands for the sample volatility, and S for the volatility of population, which can never be computed. so the population volatility is estimated using sample statistic.
 

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