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Equation 7 · Part 1 · Building a Custom Evaluation Suite for a Production Agent

Symbol z_β

zβ≈0.84z_{\beta} \approx 0.84
zβz_{\beta}

What this part means

z_β 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

z_β 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

…in a fairly ordinary case — a baseline pass rate of 70 percent, a minimum shift worth caring about of 10 percentage points, a 5 percent significance level, and 80 percent power — gives zα/2z_{\alpha/2} ≈\approx 1.96 and zβz_{\beta} ≈\approx 0.84 , and the formula returns roughly 330 trials per configuration. That number is the whole argument for treating a single failed run, or even three failed runs out of five, with real suspicion rather than as proof of a regression: at ordinary sample sizes, most of what looks…

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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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