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Which option shows a time period error in comparing growth data?

Answer and explanation

Correct answer: Directly comparing the ten-year growth of one area with the five-year growth of another area

The correct answer is A. A comparison is potentially misleading when one figure covers ten years and the other covers only five years. A longer period gives more time for population change to accumulate, so its absolute increase may look larger even if its yearly rate is lower. For a fair comparison, use equal time periods or convert the figures into comparable annual or average rates. B is correct because the same decade gives the same time frame. C is correct because percentage growth depends on the starting population, or base. D is correct because absolute increase and growth rate are different measures and should not be confused. The key step is to check the time period before comparing any growth figures. Memory cue: compare like with like—same period, same measure, and the relevant base.

Related tags

Population GrowthData ComparisonTime PeriodPopulationGeographyClass 9 Mcq

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