Historical Pespective necessary
Is an statistical measurement with standard
deviations from this statistical number, forms an upper and
lower channel, and the statistical measurement in the
middle.
You can change the Bollinger bands to short,
intermediate and/or long term depending on your objective, by
changing the frequency of the numbers of days, 10,15,30
days, etc., and also the amount of standard deviation
can be changed to 1,1.5, 2.0, etc. (this changes the
width of the channels). hope this helps