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Is the standard deviation of Set A greater than or equal to

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by AAPL » Thu Apr 04, 2019 4:33 am

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Is the standard deviation of Set A greater than or equal to the standard deviation of Set B?

1) Set B can be formed by dividing each value in Set A by 4.
2) Set A consists of 7 uniques numbers.

OA A
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Source: — Data Sufficiency |
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by swerve » Thu Apr 04, 2019 10:07 am
Statement 1.
There is no impact on the standard deviation if a constant term is added, subtracted. Standard deviation remains the same.
So standard deviation of A = Standard deviation of B. Sufficient

Statement 2.
No info about Set B. Insufficient

Hence, the correct answer is __A__
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