Bollinger Bands definition
Définition
Volatility indicator showing support and resistance levels
Created by John Bollinger, bands expand/contract with volatility; "squeezes" predict breakouts, crucial for trading range-bound altcoins. Calculation: Middle Band: 20-period SMA. Upper/Lower: Middle ± (2 × standard deviation). Bandwidth: (Upper - Lower) / Middle. Signals: Band walk (trend), squeeze (breakout impending).
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