# Data audit (P1)
| file | sha256 | rows | cols |
|---|---|---|---|
| data/design.csv | 2f459c539378cbe54d830c18af466f2fa4230ce48a609aa6464f8334a0d36ecb | 7 | 3 (parameter, value, description) |

Matches bundle.json hash. Parameters: n=30 (series length, unitless), rho=0.8, sigma=1.0 (innovation sd), intercept=yes, initial_condition=stationary (y_1 ~ N(0, sigma^2/(1-rho^2))), n_replications=20000, seed=20261029.
- Missing values: none. Duplicated parameters: none. Dates: not applicable (simulation design).
- Anomalies: none. |rho|<1 so stationary initial condition is well defined.
- Availability rules: the only input is the design; no violations possible. c=0 imposed per TASK.md.
- Note (not an error): with n=30 observations the regression uses n-1=29 pairs; the analytical formula is evaluated with n=30 as the task specifies; the n-1 variant is reported as a supplementary key only.
- Exclusions: one rule (degenerate replications), removed 0; see out/exclusions.csv. n_raw=20000 replications, n_analysed=20000.