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In which condition can comparison of natural increase be misleading?

Answer and explanation

Correct answer: When the time periods are different

Direct answer: Option B. A comparison is meaningful only when the figures refer to comparable areas, definitions and time periods. If one area’s natural increase is measured for one year but another area’s figure covers five years, the totals cannot be compared fairly. A longer period can accumulate more births and deaths and may appear to show greater increase simply because it covers more time. When population sizes differ greatly, rates may also be more useful than raw totals. Option B is correct because different periods make a direct comparison unreliable. Option A improves reliability because births and deaths are counted consistently. Option C also improves comparison because both areas are measured over the same duration. Option D is not enough by itself: official data can still mislead if their periods, definitions or geographical boundaries differ. Memory cue: before comparing population figures, check same place, same definition and same time.

Related tags

Natural IncreaseComparabilityTime PeriodProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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