Task

Pearson Correlation

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Pearson correlation x402 REST usage

Pearson correlation coefficient and covariance of two equal-length paired series. Rejected as a clean 400 if the lengths differ or either series has zero variance (correlation undefined).

stats.openverbs.com Data & Finance 2 calls / 30d checked 2026-10-26

0.004 USDC per call per call

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