In a study of two groups, the following results were obtained.
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Which of the following statements is correct?
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Which of the following statements is correct?
- AGroup A is less variable than Group B because Group A's standard deviation is smaller
- BGroup A is less variable than Group B because Group A's sample size is smaller
- CGroup A is less variable than Group B because Group A's sample mean is smaller
- DGroup A is less variable than group B because Group A's coefficient of variation is smaller
✓ Correct answer: D
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