Cross-Indicator Analytics
Correlation between two indicators, with its full provenance.
How calculated
Spearman rank correlation is the default because index distributions are bounded, ordinal-derived, and non-normal. Pearson is available as a deliberate secondary choice and is labelled as one.
Cross-provider correlation requires common-year mode. In latest-available mode each source reports its own most recent year, and pairing them would report a relationship between different periods, so the analysis is refused rather than annotated.
Raw provider values are the default basis. Direction-aligned values are available, and the basis is stated on this panel, on the axes, and in the provenance line.
Correlation Heatmap
Approved-domain correlation matrix, one concept domain at a time.
Select a domain and two different sources to view the matrix.
How calculated
Each cell is one Spearman correlation, computed exactly as the single-pair panel above computes it, restricted to variable pairs the concept crosswalk approves within one domain. A refused cell (insufficient N, no variance) is shown as a refusal with its reason, not left blank, because a blank cell would read as zero association.