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To: null and void
In no case do three or fewer points trigger an out of control alarm until you get beyond 2σ.

That is true if you assume you are starting with an unbiased coin/event etc. If you know there will likely be a bias in the outcome then its a safe bet you don't need more events.

49 posted on 10/17/2012 11:08:40 AM PDT by Raycpa
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To: Raycpa

I’m assuming a process with multiple interacting and sometimes poorly understood inputs.

Nothing so simple as a coin toss, nor quite as complex as real life.

A control chart is better suited to an engineering reality than a mathematical or political construct. Perhaps not the best tool for this particular application, but still useful.


52 posted on 10/17/2012 11:32:23 AM PDT by null and void (Day 1366 of our ObamaVacation from reality - Obama, a queer and present danger)
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