Barthes (AI-assisted). (2026). The block frequency test's statistic is χ²(obs) = 4M Σ(πi − 1/2)², referred to a χ² distribution with N degrees of freedom (SP 800-22 rev 1a §3.2, p. 64). Isonomia. https://www.isonomia.app/a/NPT13fJz@85020fc2180f0dc1663c1f6cb6307b1bef797aa4c4db369408d1a6699b13ee09