GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Sep 28Live Online Class with Top GRE Expert Mike Butville
08:00 PM EDT
-10:00 PM EDT
Top scores are possible when you enroll in a powerful GRE course, taught live online + 6 months access to TTP GRE OnDemand video courses included! Class starts Mon/Wed Sept. 28, 2026 - Dec. 9, 2026, 8:00pm-10:00pm EST
The standard deviation of grades on the math exam.
[#permalink]
24 Aug 2020, 10:23
24 Aug 2020, 10:23
Expert Reply
00:00
Question Stats:
69% (00:40) correct
30% (00:57) wrong based on 33 sessions
Hide Show timer Statistics
Attachment:
GRE The standard deviation.png [ 9.35 KiB | Viewed 3667 times ]
Quantity A |
Quantity B |
The standard deviation of grades on the math exam |
The standard deviation of grades on the chemistry exam |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Re: The standard deviation of grades on the math exam.
[#permalink]
24 Aug 2020, 10:24
24 Aug 2020, 10:24
Expert Reply
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
For more theory and practice see our GRE - Math Book
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
For more theory and practice see our GRE - Math Book
Retired Moderator
Joined: 20 Aug 2020
Posts: 49
Given Kudos: 0
Re: The standard deviation of grades on the math exam.
[#permalink]
24 Aug 2020, 14:18
24 Aug 2020, 14:18
Carcass wrote:
Attachment:
GRE The standard deviation.png
Quantity A |
Quantity B |
The standard deviation of grades on the math exam |
The standard deviation of grades on the chemistry exam |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
The standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean (also called the expected value) of the set, while a high standard deviation indicates that the values are spread out over a wider range.
We don't need to calculate them accurately for the actual standard deviations.
We just compare the distributions of grades in both exams if they are clear.
The grades in Math exam are spread out wider than the grades in Chemistry exam obviously.
Thus, A is greater than B.
Therefore, A is the right answer.
