EA to measure historical Volatility?

 

Hi Does anyone know if there is any EA we can use in strategy tester to measure the currency pair's volatility?

Say, i back test this ea using data from 2010 - 2011 and then compare with the result of 2011-2012 and i can see the volatility has increased.

Or is there such a website that i can check the stats?

if it can generate a histogram will be even better

Many thanks.

Tylor

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