_Volatility - Indicator for MetaTrader 4

Volatility is measured by calculating the standard deviation of the price increment (returns) over a period of time. The Volatility indicator measures the ratio of Vol_short's short-term volatility to the long-term Vol_short volatility. The calculation is based on the ratio of the closing price of the current day to the closing price of the previous day.

The calculation formula looks like this: Mom [i] = Close [i] / Close [i + 1]. Vol_k = Std (Mom, k), where k is the time period on which volatility is measured.