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#### insidebet

• Medium Member
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##### Standard Deviation
October 18, 2015, 01:35:55 PM
Hello,

I have payed biased wheels with success a while ago.  I was using R.T. Barnhart's formula to calculate the positive expectation.  It is a  very simple way to do it and probably good.
But I was looking into Standard Deviation as an another way to do it.  The questions are:  what kind of SD would be considered high enough?  What are the the positive expectation associated with a  particularSD?

I also have another comment.  Where I play, the ball is spun Clockwise (C) and Counter clockwise (CC).  The rotor going the other way, of course.
When I played a long time ago, I just added up the data without regarding which way the ball was spun.  Since I started compiling data a little while ago (all over again, lol!!!)  I am now considering each way ( C and CC) on it's own.  It seems to me that the bias might be present one way and not the other.  I don't remember reading anything about that.

Just wanting your expert opinion on the two subjects.

Thank you.

Insidebet
(the only way)

#### balint

• Perseverant Member
• 133
##### Re: Standard Deviation
October 18, 2015, 07:33:20 PM

#### insidebet

• Medium Member
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• VLSroulette.com Member
##### Re: Standard Deviation
October 18, 2015, 08:45:49 PM
Balint,

Thank you for the response.  I have a fairly good comprehension of what SD is.  I dont really have to know everything about it!
I asked a couple of questions regarding SD.
If any of you play biased numbers, what SD do you consider to be minimal to play such numbers?  If  you play more than one number, and those numbers are consecutive  on the wheel, I suspect you need a lower SD as a whole.  What is the positive expectancy for any particular SD? For one Number? For a sector?

I need the mechanics of using SD, not a PHD in maths!

Thank you.

Insidebet

#### VLS

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• Call me Vic!
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##### Re: Standard Deviation
October 20, 2015, 07:05:21 AM
Hello dear Insidebet,

There are more fellows who play AP at: http://rouletteplace.com/

Reaching a wider AP audience may help with maximizing your feedback.

Cheers!

#### toby

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##### Re: Standard Deviation
October 21, 2015, 12:40:15 AM
Hello,
what kind of SD would be considered high enough?  What are the the positive expectation associated with a  particularSD?

It seems to me that the bias might be present one way and not the other.  I don't remember reading anything about that.

Insidebet
(the only way)

SD is not an isolate data, you need number of trials and section to be measured. But, as a rule of the thumb, wait for 5sd in a section of at least 4 numbers

Wheel direction: there is no other way to take data separately,bias is often present only one direction

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