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In which condition can comparison of population growth rate be misleading?

Answer and explanation

Correct answer: When base populations are very different

Correct answer: A, when the base populations are very different. Population growth rate is usually expressed as a percentage of the starting, or base, population. Therefore, the same percentage can represent very different numbers of people. For example, a 10% increase in a population of 1,000 means 100 additional people, whereas 10% of 100,000 means 10,000 additional people. The percentage is not wrong, but comparing it without considering the base can give a misleading impression. B is not correct because a common base makes comparison more meaningful. C is not correct because equal time periods improve comparison, although the base must still be checked. D is not correct because correct calculation alone does not remove the effect of different base sizes. Memory cue: always ask, “Percentage of what starting population?”

Related tags

Population GrowthBase PopulationPercentage ComparisonGeographyPopulationClass 9 Mcq

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