Johndcook iconJohndcookSep 19, 2026

Why fitting a logistic is nearly impossible from early data

What appears to be an exponential curve often turns out to be some sort of S curve, such as a logistic curve.

Why fitting a logistic is nearly impossible from early data

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What appears to be an exponential curve often turns out to be some sort of S curve, such as a logistic curve.

Suppose you're collecting data on the left side of the curve.

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What appears to be an exponential curve often turns out to be some sort of S curve, such as a logistic curve. Suppose you're collecting data on the left side of the curve.

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  • Suppose you're collecting data on the left side of the curve.

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