Bollinger Bands Width technical indicator is derived from Bollinger Bands. Non-normalized Bollinger Bands Width measures the distance or difference, between the upper band and the lower band. Bollinger Bands Width decreases as Bollinger Bands narrow and increases as Bollinger Bands widen because Bollinger Bands are based on the standard deviation.
This sample contains two plots: one with the stock data presented by the OHLC series and both series of a Bollinger Bands indicator, and the second plot with the Bollinger Bands Width indicator.