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Equation 11 · Measuring Frontier Models: Contamination, Variance, and What a Score Can Support

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p≈0.5p \approx 0.5

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This equation gives an approximation: it relates the quantities while allowing an approximation. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.

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pp

Symbol p

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

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≈

≈

Approximately equal to; the equality is not exact.

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Its accuracy depends on the assumptions and range of use described in the article.

What the article says around this equation

which for p ≈\approx 0.5 and n = 200 is about 3.5 percentage points — before adding any run-to-run generation variance, and before accounting for the fact that benchmark items are not independent. A reported two-point difference between two systems on such a suite is not evidence of anything.

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