Bermaui Bands (BB) is a technical analysis tool that help filter between ranging and trending price movements. The idea behind this indicator can be explained in the next steps:

1. Calculate Standard Deviation as oscillator that move between 0 and 100. I will name it Bermaui Deviation percent (BD %).
2. If "BD %" is near zero then volatility is at its extreme. In addition, if "BD %" is near 100 then volatility is very low.
3. High volatility mean a great probability for a trending market, while low volatility mean side-way or ranging market.
4. Middle Line is a Simple Moving Average (SMA), because Standard Deviation is calculated depending on SMA.
5. Add "BD %" to a simple moving average with the same number of bars in calculation to get The Upper Bermaui Band.
6. Subtract "BD %" from a simple moving average with the same number of bars in calculation to get The Lower Bermaui Bands.

important Information

• Bermaui Bands Demo: https://www.mql5.com/en/market/product/43084
  

• Bermaui Bands User's Manual:  https://www.mql5.com/en/blogs/post/718688

• Bermaui Bands Expert Advisor Example: https://www.mql5.com/en/blogs/post/731143

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