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If a country's population grows by 20 percent over ten years, which conclusion cannot be stated with certainty?

Answer and explanation

Correct answer: Annual growth rate was exactly 2 percent every year

A total population increase of 20% over ten years tells us the relationship between the beginning and ending populations, but not the exact path between them. The final population is 120% of the initial population, and the absolute change is positive. However, growth may have been uneven: some years could have had higher growth and others lower growth.

Therefore, we cannot state with certainty that every year had exactly 2% growth. Also, even constant annual growth that produces a 20% total increase would generally involve compounding, not simply 20 divided by 10. Hence option C is correct. The question asks what cannot be concluded, and the exact yearly pattern is not supplied.

Related tags

Total GrowthAnnual Growth RateCompound GrowthPopulation InterpretationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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