Re: [TSPStrategy] S Fund graphs

@Scott N

if you look at a standard bell curve, 2 standard deviations encompass 2/3 of the data, so by definition 2/3 is encompassed inside a 2 standard deviation measure.

The Bollingerbands are designed to encompass 2/3, 2 Standard deviations using a moving average of around the last 20 days. they should stay "outside" both the moving average line and the raw daily data line, 2/3 of the time, by definition.

when the raw daily data doesn't "bounce around" a lot, the moving average line is smoother and the bands tend to constrict, slowly, less volatility in the price action, the market is "calmer" so to speak.

i learned about these around 35-40 years ago when i first started looking at technical analysis of stocks and commodities 

it's a black art and not easily understood and i don't claim to understand it but it gives me glimpses

basically the 2 bands are the ones mostly on the outside.  i have extremely poor color vision so i'm pretty sure they are 2 different colors

hope this helps

On Feb 19, 2021, at 8:43 PM, Scott N <scottnieto@gmail.com> wrote:

Are the bollinger bands in two different colors?

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