What I mean is how do I make a formula for that? 

Hi Bruce, 

If the value of the upper bollinger band 3 st dev is 119.20 then the lower bollinger band 3 st dev is 118.70. The difference is .50. How do I make this a formula?  

Hi bruce I am trying to get the difference of the upper and lower 3 st dev bollinger band.

How do I test it to know if the values are correct? 

How do I put into formula the difference of the high of the 3 std dev of bollinger band to the low of the 3 std dev bollinger band? 

Is it possible? 

Hi Bruce, 

I would like to make an easy scan to track down all price movements going outside the BB 30 1std

Hi Bruce, 

I would like to know how to write the formula of the absolute value of close - open / high - low for the last 30 trading days

Hi Bruce,

How can I get the average of the gaps for the last 30 days? 

May I know the formula for: 

stdev yesterday. Thank you bruce! 

Is there such a formula for the st. dev of a stock?