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Standard deviation of 0, 25, 50, 75, 100
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03 Aug 2026, 23:58
03 Aug 2026, 23:58
Expert Reply
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Question Stats:
40% (01:20) correct
60% (00:56) wrong based on 5 sessions
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Quantity A |
Quantity B |
Standard deviation of 0, 25, 50, 75, 100 |
Standard deviation of 0, 0, 0, 0, 100 |
Quantity A is greater.
Quantity B is greater.
The two quantities are equal.
The relationship cannot be determined from the information given.
- Part of the project: GRE Daily Quant Challenge ALL 4 CORE QUANT AREAS
- Also replying to the unanswered questions
GRE Prep Club Team Member
Joined: 20 Feb 2017
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Re: Standard deviation of 0, 25, 50, 75, 100
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06 Aug 2026, 13:10
06 Aug 2026, 13:10
1
Expert Reply
Explanation
Compare the spread of the numbers.
Quantity A: 0, 25, 50, 75, 100
The numbers are spread out evenly around the middle.
Quantity B: 0, 0, 0, 0, 100
Four numbers are at 0, but one number is very far away at 100.
Use the idea of standard deviation.
Standard deviation measures how far the numbers are from the average.
In Quantity A, no value is extremely far from the average.
In Quantity B, the value 100 is much farther from the average than the values in Quantity A, making the data more spread out.
Conclusion
Since Quantity B has the greater spread, it has the greater standard deviation.
Answer: B
Compare the spread of the numbers.
Quantity A: 0, 25, 50, 75, 100
The numbers are spread out evenly around the middle.
Quantity B: 0, 0, 0, 0, 100
Four numbers are at 0, but one number is very far away at 100.
Use the idea of standard deviation.
Standard deviation measures how far the numbers are from the average.
In Quantity A, no value is extremely far from the average.
In Quantity B, the value 100 is much farther from the average than the values in Quantity A, making the data more spread out.
Conclusion
Since Quantity B has the greater spread, it has the greater standard deviation.
Answer: B
gmatclubot
Re: Standard deviation of 0, 25, 50, 75, 100 [#permalink]
06 Aug 2026, 13:10
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