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Forex and Bollinger Bands - How to Trade Using Bollinger Bands - Forex Futures
Bollinger Bands indicator is very much similar to the Envelopes, with the following difference only. The last has limits below and above the moving average, with definition in percentage. The BB’s limits are located in distance equal to definite quantity of average deviations depending on the volatility: the distance is greater when the market is unstable and is less when the market is stable.

BB may be placed on the price schedule, as well as on the indicator chart. Bollinger Bands peculiarity is that the prices are in limits of the upper and bottom limits and the distance is getting larger in the most dynamic periods and are more narrow once the market is quiet.

Sharp rates changes normally come after the lines are getting closer. And if the prices are exceeding the limits, the current trend is keeping. Change of the trend direction is possible if the ups and the downs outside the line will be followed by the ups and downs inside the line. To forecast the price directions it’s important to know that the price change started within one of the limits would normally reach the opposite limit.

Three Important Bollinger Bands
The three bands involved consists of a center graphing of a simple moving average, recommended by Bollinger to be 20 days, with the concomitant plotting of prices above and below of two period standard deviations, which would represent the relative range trading has occurred.
Classical statistical analysis cannot be applied to the closing prices of investments.
This results from the fact that individual foreign exchange closing prices, for example, do not follow stochastic distribution processes. This is because foreign exchange prices are not normally distributed.

The calculations in determining the standard deviations for foreign exchange prices can only be regarded as an uncertain estimate of a true standard deviation.
Because prices are constantly moving depending on volatility, they cannot be viewed as fixed parameters needed for classical statistical theory.
What Bollinger has done, nonetheless, is to offer a new technique to the investor to gauge volatility.

Trading Forex Signals via Bollinger Bands
Some investors view the breaching of an upper or lower Bollinger band as a standalone trading signal in order to undertake a position. As such, these events can be awarded inordinate significance.

Studies have shown penetration of Bollinger bands can occur up to 15% of the time. Not all of these events, however, are followed by a continuation of price movement in the direction of penetration.
Consequently, in order to improve performance in the trading of foreign exchange currencies, one would want to add additional confirmation signals before undertaking a position.

Popular Bollinger Band Strategies for Forex
Considering that most prices will fluctuate within Bollinger bands, many Forex traders buy when prices are near the lower range band and reverse their position when prices subsequently move to the moving average or higher.

Bollinger bands can effectively be used especially in conjunction with other indicators to determine trend reversals, as well as entry and exit points.

One indicator that becomes extremely beneficial for trading foreign exchange with the use of Bollinger bands is the Relative Strength Indicator or RSI.

Using Bollinger bands with RSI confirmation, one would short the currency if penetration of the upper Bollinger band occurs, while the Relative Strength Indicator is simultaneously showing weakness.

Under this circumstance, an investor would anticipate the price to fall and would exit upon reaching the lower Bollinger band or before.

One would do the opposite, if the currency price went through the lower band, and yet the Relative Strength Indicator showed strength.

At this point, an investor would undertake a long position in the currency in anticipation of a minimum movement of back up to the moving average level.

There is no absolute certainty in foreign exchange trading, but with the prudent use of tools such as Bollinger bands and the Relative Strength Indicator, any individual can greatly improve performance.