Bruce,

I need the formula for:

- The Top 10period, 1Std Dev Bolliner band

- The Bottom 10period, 1Std Dev Bollinger Band

Thanks

The simple upper Bollinger Band 10, 1.00 can be written as follows.

AVGC10 + SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 - 10 * AVGC10 ^ 2) / 10)

The simple lower Bollinger Band 10, 1.00 can be written as follows.

AVGC10 - SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 - 10 * AVGC10 ^ 2) / 10)

Bruce,  if I wanted to write the same formulas, based on the HIGH price, or the LOW price, how would you write those?  Is it simply a matter of replacing the C's with L's, or H's?   Would you write the formulas please?

Also, if I wanted to have Bollinger Bands on an exponential price, is that possible?  If so, how would it affect the requested formulas above?

Thank you for your guidance and assistance.

Yes, you can just substitute H or L in the formulas to base the Bollinger Bands on the highs or lows instead of on closing prices.

If you just mean the Bollinger Bands in TC2000 where the Average Type has been changed from Simple to Exponential, then you can just but an X at the beginning of the formula. So the first formula would become the following.

XAVGC10 + SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 + C6 ^ 2 + C7 ^ 2 + C8 ^ 2 + C9 ^ 2 - 10 * AVGC10 ^ 2) / 10)

Thanks

You're welcome.