# Data audit

• data/panel.csv SHA-256 968410b993df4d696194ba82b35a030d9c4f5f69e3c2de2c16c7b304d55ce5a8
• 2000 rows x 3 cols: firm_id int64, x float64, y float64 (dimensionless, synthetic). No dates.
• Missing: 0 in every column; non-numeric: 0; exact duplicate rows: 0.
• 50 firms (ids 0-49), balanced: 40 obs each.
• x: mean 0.161, sd 1.325, range [-4.34, 4.99]; y: mean 1.573, sd 1.782, range [-3.50, 7.20]. No implausible values.
• Availability: single permitted input; no violations.
• Exclusions: none needed (see out/exclusions.csv; both rules removed 0 rows).