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Standard Deviation?
#468011
09/13/17
03:26
09/13/17
03:26
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Posts: 7
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flare9x
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flare9x
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Hi All
I am new to Zorro and going through the workshops.
I see there is a SMA function, can we call a Standard Deviation function also?
Otherwise would need to create my own function for this.... is it STDEV or STD or DEV, is it hidden in the manual anywhere?
Thanks
Andrew
Re: Standard Deviation?
[
Re: flare9x
]
#468013
09/13/17
09:51
09/13/17
09:51
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Brax
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You only need to code this:
dev = StdDev(Price, 10);
The definition is here:
http://manual.zorro-trader.com/ta.htm
Look for it.
Re: Standard Deviation?
[
Re: Brax
]
#468029
09/13/17
20:12
09/13/17
20:12
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flare9x
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flare9x
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Makes sense... however, i dont see it in this list!? ctrl f on page and StdDev doesnt reveal it in the page above... well it makes sense so will give it a whirl.
Thanks
Re: Standard Deviation?
[
Re: flare9x
]
#468033
09/14/17
09:51
09/14/17
09:51
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Brax
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Yes, it´s true. StdDev doesn´t appear on that page, my mistake.
Anyway, if you´re asking because you want to implement bollinger bands, you can see it in action on the first example at the end.
If you just wanted StdDev, you´ve got it already.
Re: Standard Deviation?
[
Re: Brax
]
#468035
09/14/17
12:37
09/14/17
12:37
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AndrewAMD
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AndrewAMD
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This is in Zorro help and not in the online manual for some reason.
www.vitaltrades.com
-
andrew@vitaltrades.com
Re: Standard Deviation?
[
Re: AndrewAMD
]
#468042
09/14/17
16:15
09/14/17
16:15
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johnnyp
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johnnyp
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sorry, wrong thread.
Last edited by johnnyp;
09/14/17
16:16
.
Re: Standard Deviation?
[
Re: johnnyp
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#468110
09/19/17
00:03
09/19/17
00:03
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flare9x
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All good - Yes I see it in the zorro help. They have zscore in there also which is useful. Its the reason why I wanted to have stdev.
Thanks
Re: Standard Deviation?
[
Re: flare9x
]
#468128
09/19/17
12:50
09/19/17
12:50
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johnnyp
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Question for the devs... Does zscore use StdDev from ta-lib?
If that is the case, then if StdDev < 0.0001, StdDev returns 0 and funny things will happen.
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