The Aggregated System-wide Coefficient of Variation is
simply the sum of the Aggregated In-migration
migration.acv.in) and the Aggregated
Out-migration Coefficient of Variation
A number where a higher (\neq 0) shows more spatial focus.
Andrei Rogers and Stuart Sweeney (1998) Measuring the Spatial Focus of Migration Patterns. The Professional Geographer 50, 232–242
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