markcrisp
187 posts
msg #47859
- Ignore markcrisp |
11/7/2006 6:41:16 AM
See subject line. Can this be done?
Say you wanted to find a B.B. standard deviation 3...what would I write?
Thank you
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rharmelink
81 posts
msg #47870
- Ignore rharmelink |
11/7/2006 6:21:20 PM
Is something like this what you're asking for:
Bollinger Bands(50,3.0)
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maxreturn
745 posts
msg #47871
- Ignore maxreturn |
11/7/2006 6:33:04 PM
Mark, the following filter identifies stocks whose closing price is more than 3 standard deviations above OR below the 20 period moving average:
I'm assuming this is what you wanted. If you have any questions, please ask.
Regards
Max
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markcrisp
187 posts
msg #47875
- Ignore markcrisp |
11/8/2006 5:02:47 AM
Hey thanks guys. Great help.
Trouble is I have no idea what the scan means?
Does this mean a 50 day B.B. standard deviation 3?
Bollinger Bands(50,3.0)
Obviously I need to biuld more of a filter around this...
Thanks again
Mark
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maxreturn
745 posts
msg #47876
- Ignore maxreturn
modified |
11/8/2006 2:37:11 PM
Hello Mark. Yes, the second parameter allows you to choose the number of standard deviations that the upper/lower bollinger bands will be above/below the moving average. The first parameter allows you to choose the number of periods for the simple moving average. So....
bollinger bands(20,3) will plot a 20 period moving average, an upper band which is 3 standard deviations above the 20 period moving average and a lower band which is 3 standard deviations below the 20 period moving average.
Regards
Max
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