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Relative Volatility Index was elaborated by Donald Dorsey in 1993 and introduced in “ Technical Analysis of Stocks and Commodities” magazine. RVI is not a separate indicator; it is used to confirm signals and improve trading systems. This index measures forces of volatility movement. It does not duplicate signals of other oscillators, but just confirms them. RVI and Relative Strength Index are very much alike, but they additionally demonstrate highest and lowest points of price of standard deviation in a certain range. RVI is calculated in a way similar to calculation of RSI, but here 10-days' standard deviation of close price is taken instead of change of price.
Popular article: Forex Entry Strategy
Entry opportunity is the time when a trader can open a position and has a higher probability to gain profit. Mostly, entry opportunities are considered only when a signal is formed. But, for every signal, there are more opportunities than just one. In short, as long as the highest or lowest point of the day isn't reached yet, you also have opportunities to open a position as many times as they are available. But how to calculate entry opportunities at a certain time? Let's use a pair with average daily range 100.0 pips, and price range between 0.00001 to 0.01000. Thus, a strategy with expected profit target of 30.0 will be: average daily range – expected profit = 100.0 – 30.0 = 70.0
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