[amibroker] Bollinger Band AFL

["bacu_robert" <bacu_robert@xxxxxxxxx>]

I am trying to calculate the standard deviation used in the bollinger band functions BBandBot, and BBandTop() to get a more detailed understand of how they work, and to put the calculation into MS Excel.  

I can calculate the middle line as it is quite easy, but the rest of it is something that I can only get close to.  I using the default of period = 15, and Width = 2

Does anyone have sample code on how the standard deviations are calculated?

Thanks in Advance,
RB



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