Great-circle distance
The shortest distance between two points along the surface of a sphere or ellipsoid. Applies/refers to the shortest distance between two cities or towns (using the city/town center coordinates as points).
The geometric center, the center of mass, or the average position of all points of a polygon. Applies/refers to the average coordinates of barangay borders.
Population growth rate
The rate at which the population increases within a given time or period. Applies/refers to the calculated growth rates between each census.
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