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A measure of the variation in price over time. Also a measure of the risk of a financial instrument.
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What does "true"volatility mean in volatility comparison?
In Sinclair's book, wee need to compare standard deviation with "true volatility" to check the power of the model suggested, close -to-cloce, or Parkinson formula, etc. … What do we mean here by "true" volatility when we calculate standard deviation, with what we have to compare it with? …
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Stochastic Volatility for Stocks, FTSE
Can someone help me with calculating Stochastic Volatility (of stocks and options) using SAS or R or Matlab please? …