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Two properly selected random samples from the same population produce slightly different estimates of public-service satisfaction. What is the most appropriate interpretation?

Answer and explanation

Correct answer: Sampling variation can produce different estimates even when both samples are properly selected

Random samples usually contain different individuals, so their estimates can vary by chance. Reporting uncertainty helps distinguish ordinary sampling variation from stronger evidence of a real difference.

Related tags

Sampling VariationStatistical UncertaintyRandom SamplesSurvey Interpretation

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