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Which is the most suitable data set for measuring population change?

Answer and explanation

Correct answer: Births, deaths, in-migration, out-migration, and a specified time period

The direct answer is A: births, deaths, migration, and a time period are needed to measure population change. Population does not change only because children are born or people die. People may also enter an area from another place, called in-migration, or leave it, called out-migration. We must compare these changes over a stated period, such as one year, so that the amount and direction of change can be calculated. Option A is correct because it includes the main population processes and the time required for comparison. B describes physical features, not population processes. C describes cultural characteristics; these may help us understand society but do not measure numerical change. D concerns natural resources and production, not the number of people. Memory cue: population change = births − deaths + in-migration − out-migration, measured over time.

Related tags

Population ChangeData RequirementsMigrationBirths And DeathsProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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