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Registered User
Joined: 12/11/2004
Posts: 59
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Looking to create a custom indicator. Need the formula for "Standard Deviation". If I have that Iwould be able to put the days I need.
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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The Modelling Bollinger Bands (& Standard Deviation) in a TC PCF topic explores how to create formulas for Standard Devation.
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 12/11/2004
Posts: 59
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Don't fully understand that post. Could you show PCF for Standard Deviation 6 period? Once I see the formula I'll be able to adjust if need be.
Thanks,
Michael
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
|
A formula for a 6-Period Standard Deviation as used in the Bollinger Bands in TC2000 version 7 would be:
SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 - 6 * AVGC6 ^ 2) / 5)
A formula for a 6-Period Standard Deviation as used in the Bollinger Bands in TC2000 version 12 would be:
SQR(ABS(C ^ 2 + C1 ^ 2 + C2 ^ 2 + C3 ^ 2 + C4 ^ 2 + C5 ^ 2 - 6 * AVGC6 ^ 2) / 6)
The difference being that one is the Standard Deviation of Sample and the other is the Standard Deviation of Population.
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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