Exact relationship builder

Indicator comparison lab

Compare two measures while keeping their entities, periods, units, and source populations visible. A visual association does not establish causation.

Build comparison Open data

Active planeIndustry HHI x CR4679 exact pairs · r 0.94

Relationship planes15declared contracts

Exact pairs6,194entity-period matches

Domains6bounded universes

Imputation0missing sides filled

Comparable hereExact pairs, within-contract ranks, coverage, and descriptive association.

Never inferred hereCausation, legal market findings, forward-filled values, or a national composite score.

Read method

Comparison controls

Build an exact paired slice

Paired measuresPeriodNAICS sectorEntity search

Evidence scopeAll source records

Evidence sidePublic sourceData statusConfidence

Exact pairing ruleSame six-digit NAICS industry and Economic Census yearLatest pair per entity · both-side evidence

Paired visualization

Detailed industry HHI and CR4

679 exact pairs in this slice

Exact pairs: 679; 520 plotted
Correlation: +0.94; Strong positive association
R²: 0.89; descriptive linear fit
Evidence: 679; verified on both sides

Paired comparison cohort

0 / 5 entities · fixed 679-pair benchmark

Select a point, then add it or its nearest exact-pair peers.

The cohort changes the overlay and exact export only. Full-slice medians, correlation, quadrants, and coverage remain fixed.

Selected exact pairDeep sea passenger transportation483112 · 2022 · 48

Industry HHI: 3,436.1; Verified · High
Industry CR4: 97.7%; Verified · High

Median positionAt or above both slice medians

X source: census-ecnsize-concentration-2022
Y source: census-ecnsize-concentration-2022

Research handoff4 canonical profiles

Open context map

Entity profile X dossier Y dossier

Coverage diagnostics

What entered the plane, and what did not

Pairing coverage is reported separately for each indicator denominator. A matched row is not evidence that either source covers the full underlying economy.

Industry HHI100.0%679 matched of 679

Industry CR475.7%679 matched of 897

A NAICS industry is a statistical classification, not a legally defined antitrust market. Use these national revenue concentration measures to screen where deeper product and geographic market analysis may be warranted, not to infer market power or liability. The relationship is descriptive and does not make a statistical industry equivalent to a legal antitrust market.

Higher / higher329

Higher X / lower Y11

Lower X / higher Y11

Lower / lower328

Quadrants use this filtered slice's medians: 284 and 26.6%.

Slice ledgers

Period and group structure

Counts and correlations stay inside exact paired rows. Small groups may be too thin for a stable descriptive association.

Period coverage1 period

2022679+0.94

NAICS sector ledger17 visible

Group	Pairs	X avg.	Y avg.	r
31	271	585.9	37.1%	+0.96
42	55	408.7	31.4%	+0.98
54	39	150.6	17.3%	+0.97
48	38	539.1	32.9%	+0.93
44	31	394.3	27.2%	+0.96
56	30	354.7	26.5%	+0.95
62	30	164.7	14.1%	+0.96
81	30	105.5	13.2%	+0.97
52	27	748.3	41.0%	+0.93
23	26	51.1	8.7%	+0.98
71	19	391.8	25.0%	+0.96
21	17	613.9	39.2%	+0.97
51	17	798.4	45.0%	+0.97
53	17	423.7	26.8%	+0.94
61	12	96.8	14.3%	+0.98
72	11	219	16.3%	+0.97
22	9	730.4	41.6%	+0.98

Reusable comparison packet

Carry the exact contract into analysis

The endpoint returns every matched row in the filtered slice, both observation identifiers, both source routes, evidence status, confidence, entity, group, and period.

JSON packet/api/public/indicators?relationship=industry-hhi-cr4 CSV exportComplete filtered exact pairs Pairing methodSame six-digit NAICS industry and Economic Census year

This lab compares only declared same-entity, same-period pairs. Missing sides are excluded rather than imputed, correlation remains descriptive, and unlike universes are never combined into a composite market-power score.

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