[Copernicus]

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Been a long time since my statistics classes, 30+ yrs. But I agree that SD deals with groups of #'s and unless N is big enough, the calculation for the value of the standard deviation becomes too unreliable. Particularly here where the two lone outcomes are rightfully suspected to be outside the probable outcomes.

Wouldn't it be more accurate to say that the odds of losing 2 3:1 shots in a row is 1/3 x 1/3 for 1/9. Since, by definition, +or- two standard deviations is the range that captures the true "average" about 90% of the time, that this outcome is close to the outer marker on using standard deviation to find the true "average."

Any effort to clean up my old terminology is appreciated.

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More important than terminology, losing two 3:1 shots in a row is 1/4 * 1/4, not 1/3 * 1/3.