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Equation 29 · Part 3 · Why Average Success Rate Hides the Failures That Matter Most

Symbol q_τ

n≈k/qτn \approx k/q_\tau
qτq_\tau

What this part means

q_τ is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

q_τ is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

State the sample size the claim actually requires. If a system is being represented as safe at a given tail probability, report the number of trials run and compare it explicitly against the n ≈\approx k/qτq_\tau threshold needed to have observed the claimed rate with any precision, rather than letting a comfortable-sounding trial count stand in for a rate that would in fact require orders of magnitude more observations.

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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Sources cited in the article section

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