Public observability layer
Comparative Observatory
Descriptive statistical comparison framework. Evidence View primary · Dashboard View secondary.
Comparative Observatory · mandatory disclaimer
Descriptive statistical comparison only. No venue is characterised as unsafe, harmful, or non-compliant. Not a regulatory determination.
Methodology
Stage 9 — Comparative Observatory methodology. Descriptive statistical framework. Deterministic computation, no inference.
Computation parameters
- Latest-anchor snapshot: venue_quarter_observations from stage 4.
- Long-term window: 6 publication anchors.
- Sustained growth: 3 consecutive periods of strictly-positive period-over-period EGM movement on the LGA stable-coverage series.
- Volatility: stdev of period-over-period percentage change on the stable-coverage anchor window ≥ 0.50 (50%).
- High-density EGM: latest total EGM in the top quintile (p80+) of all LGAs.
- Standard percentile bands: 10, 25, 50, 75, 90.
- Dedupe: per (canonical_venue_id, anchor) with net_profit (Type B) priority over per-machine (Type C).
- Metro/regional classification: registry-based mapping (no inferred socio-economic implication).
Baseline registry
- BL_STATE_TOTAL_EGM — State total EGM count (latest published anchor)COMPUTABLE
- BL_STATE_TOTAL_VENUES — State total venues observed (latest anchor)COMPUTABLE
- BL_STATE_MEDIAN_VENUE_EGM — State median EGM count per venue (latest anchor)COMPUTABLE
- BL_STATE_YOY_EGM — State year-over-year EGM movementCOMPUTABLE
- BL_STATE_LT_AVG_EGM — State long-term average EGM count (6-quarter)COMPUTABLE
- BL_PROFIT_PER_ADULT — Profit per adult (LGA grain)UNCOMPUTABLE
- BL_PROFIT_PER_MACHINE — Profit per machine (venue/LGA)UNCOMPUTABLE
- BL_MACHINE_DENSITY — Machine density (EGMs per adult, LGA)UNCOMPUTABLE
- BL_VENUE_DENSITY — Venue density (venues per adult, LGA)UNCOMPUTABLE
Cluster registry
- HIGH_DENSITY_EGM — High-density EGM areastop quintile by total EGM countCOMPUTABLE
- EXPENDITURE_CONC — Expenditure concentrationrequires NSW-published net profit dollars at LGA grainUNCOMPUTABLE
- SUSTAINED_GROWTH — Sustained-growth regionsLGAs with ≥ 4 consecutive periods of positive YoY EGM movementCOMPUTABLE
- VOLATILITY — Volatility clustersperiod-over-period EGM movement coefficient of variation ≥ 5%COMPUTABLE
Stage 9 discipline
- comparisons_are_descriptive
- comparisons_are_statistical_not_accusatory
- no_venue_safety_or_compliance_labelling
- no_predictive_intervention_recommendation
- no_causation_claim
- methodology_and_limitations_on_every_output
- uncomputable_metrics_remain_uncomputable
- clustering_is_deterministic_quantile_bucketing
- no_k_means_no_learned_models_no_ai
- percentile_positioning_uses_published_rank_where_available
- evidence_view_is_primary_dashboard_view_is_secondary
Descriptive statistical comparison only. No venue is characterised as unsafe, harmful, or non-compliant. Not a regulatory determination.