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Which option gives the most reliable condition for comparing decadal growth?

Answer and explanation

Correct answer: Data with same ten year period and same definition

Direct answer: Option A is correct. A fair comparison of decadal growth requires data that measure the same kind of change over the same ten-year period. First, check that both areas are being compared for ten years, not five years versus ten years. Next, check that population definitions, administrative boundaries, census methods and units are comparable. Only then can we compare the absolute increase or the percentage growth rate meaningfully. Option B is wrong because unequal time periods can make one area appear to grow more simply because it was measured for longer. Option C is wrong because hearing totals is not a reliable method and gives no verified time basis. Option D is wrong because migration can strongly change population totals and should be considered when relevant. Memory cue: same time, same meaning, then compare growth.

Related tags

Decadal GrowthComparative DataTime PeriodPopulation GrowthPopulationGeographyClass 9 Mcq

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