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NDA Math Statistics

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Question : 63

Total: 100

In a study of two groups, the following results were obtained:

	Group A	Group B
Sample Size	20	25
Sample mean	22	23
Sample standard deviation	10	12

Which of the following statements is correct?

Group A is less variable than Group B because Group A’s standard deviation is smaller.
Group A is less variable than Group B because Group A’s sample size is smaller.
Group A is less variable than Group B because Group A’s sample mean is smaller.
Group A is less variable than group B because Group A’s coefficient of variation is smaller.

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