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volatility_v1
Longitudinal volatility
Variance of observed rank and EGM count over the operational window. Variance is computed on directly observed values; missing periods are excluded, not imputed.
Institutional metadata
- Evidence class
- institutional methodology
- Institutional use
- governance_documentation
- Methodology version
- volatility_v1
Known limitations
- Thresholds are methodology-declared, not regulatory.
- Causation is not inferred.
Decision-support indicator only. Not a regulatory determination.