Bollinger bands iphone
Bollinger Bands BB are similar to Envelopes. Standard deviation is a measure of volatility, therefore Bollinger Bands adjust themselves to the market conditions. When the markets become more volatile, the bands widen and they contract during less volatile periods. Bollinger Bands are usually drawn on the price chart, but they can be also added to the indicator chart. Just like in case of the Envelopesthe interpretation of the Bollinger Bands is based on the fact that the prices tend to remain in between the top and the bottom line of the bands. A distinctive feature of the Bollinger Band indicator is its variable width due to bands volatility of prices. In periods of considerable price changes i. During bollinger periods, or the periods of low volatility the band contracts keeping the prices within their limits. The following traits are particular to the Bollinger Band: The last observation is useful for forecasting bands guideposts. Bollinger bands are formed by three lines. The middle line ML is a usual Moving Average. The top line TL is the same as the middle bands a certain number of standard deviations D. The bottom line BL is the middle line shifted down by the same number of standard deviations. It is recommended to use period Simple Moving Average as the middle line, and plot top and bottom lines two standard deviations away iphone it. Besides, moving averages of less than 10 periods are of little effect. Average Directional Movement Index Bollinger Bands Envelopes Ichimoku Kinko Bollinger Moving Average Iphone SAR Iphone Deviation. Calculation Bollinger bands are formed by three lines. A MetaQuotes Software Corp.
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