Bollinger Bands, first proposed and implemented by John Bollinger, have been around for a long time. This implementation is mostly a repackage to make it easy to start using them.
Bollinger Bands are a technical analysis tool invented by John Bollinger in the 1980s. Bollinger Bands can be used to measure the highness or lowness of the price relative to previous trades.
Bollinger Bands consist of a middle band that is the simple moving average of the period, an upper band that is a standard deviation above the middle band, as well as a lower band that is a standard deviation below the middle band.
Typically there is a 20-day moving average with a standard deviation of 2 to form the upper and lower bands.
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