Last visit was: 26 Dec 2024, 13:49 It is currently 26 Dec 2024, 13:49
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

S is the set of all test scores in Ms. K’s class. T is the s

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

User avatar
D
Carcass
Verbal Expert
Joined: 18 Apr 2015
Posts: 30513
Own Kudos [?]: 36867 [0]
Given Kudos: 26109
Send PM
S is the set of all test scores in Ms. K’s class. T is the s [#permalink] New post   14 Oct 2020, 08:27
Expert Reply
00:00

Question Stats:

81% (00:28) correct 18% (00:35) wrong based on 49 sessions

Hide Show timer Statistics

S is the set of all test scores in Ms. K’s class.

T is the set of all test scores in Ms. K’s class, after Ms.

K added 10 points to every test score in the class.


Quantity A
Quantity B
The standard deviation of set S
The standard deviation of set T



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.

Kudos for the right answer and explanation
ShowHide Answer
Official Answer
C
avatar
rcpacheco
Intern
Intern
Joined: 21 Oct 2020
Posts: 28
Own Kudos [?]: 37 [0]
Given Kudos: 0
Send PM
Re: S is the set of all test scores in Ms. K’s class. T is the s [#permalink] New post   21 Oct 2020, 17:58
1
Both sets have the same standard deviation. The answer is C.

Standard deviation is a measure of the spread of the data around the mean. If you add the same number to each element of the set, in this case 10, the new mean of the set will be 10 points higher. So the distance of each point to the new mean will be the same as before.
Prep Club for GRE Bot
gmatclubot
Re: S is the set of all test scores in Ms. K’s class. T is the s [#permalink]
21 Oct 2020, 17:58
Moderators:
adewale223
GRE Instructor
88 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1115 posts
VibhuAnurag
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact