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? [NDA II 2016]

Correct Answer is : Group A is less variable than group B because Group A’s coefficient of variation is smaller.

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.

NDA Math Statistics

Question : 63 of 100

Marks: +1, -0

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

Which of the following statements is correct?

[NDA II 2016]

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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