Find all School-related info fast with the new School-Specific MBA Forum

It is currently 24 Jul 2014, 07:44

Close

GMAT 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 GMAT 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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

GMATPrep 2 - SD question

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Joined: 31 Dec 1969
Location: United States
Concentration: Marketing, Other
GMAT 1: 710 Q49 V38
GMAT 2: 660 Q V
GPA: 3.64
WE: Accounting (Accounting)
Followers: 0

Kudos [?]: 50 [0], given: 74998

GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 15:16
This may be a dumb question but, I don't understand why the answer isn't E considering both options only give us with 4 numbers in each set. Without knowing the 5th number, how can we know which SD is larger?
Attachment:
SD question.JPG
SD question.JPG [ 52.31 KiB | Viewed 542 times ]
Director
Director
avatar
Joined: 23 Sep 2007
Posts: 798
Followers: 5

Kudos [?]: 73 [0], given: 0

GMAT Tests User
Re: GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 15:38
If 45 is an integer in list T, then the other integer must be 35

If 25 is an integer in list S, then the other integer must be 55

Therefore the range of list S is bigger, and must have larger SD
Joined: 31 Dec 1969
Location: United States
Concentration: Marketing, Other
GMAT 1: 710 Q49 V38
GMAT 2: 660 Q V
GPA: 3.64
WE: Accounting (Accounting)
Followers: 0

Kudos [?]: 50 [0], given: 74998

Re: GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 15:49
Ohh I'm such an idiot, of course I can find the last number. Thanks again - ignore me please!! :)
Director
Director
avatar
Joined: 01 May 2007
Posts: 795
Followers: 1

Kudos [?]: 56 [0], given: 0

GMAT Tests User
Re: GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 17:33
I understand we can get the 5th digit and also calculate SD if we wanted...but can you explain the relationship between SD and Range? How does the range help us calculate SD?
Joined: 31 Dec 1969
Location: United States
Concentration: Marketing, Other
GMAT 1: 710 Q49 V38
GMAT 2: 660 Q V
GPA: 3.64
WE: Accounting (Accounting)
Followers: 0

Kudos [?]: 50 [0], given: 74998

Re: GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 18:22
I believe the greater the distance each number in the set is away from the mean then the larger the SD. So not the range, but the distance between the farthest data points and the mean.
Manager
Manager
avatar
Joined: 28 May 2008
Posts: 98
Followers: 2

Kudos [?]: 7 [0], given: 0

Re: GMATPrep 2 - SD question [#permalink] New post 01 Jun 2008, 22:54
I am a little late.
But yes answer is c
Using 1, we can find out the missing number in s is 55
using 2 we can find the missing no in T= 35
hence standard deviation of s is more
Re: GMATPrep 2 - SD question   [#permalink] 01 Jun 2008, 22:54
    Similar topics Author Replies Last post
Similar
Topics:
GMATPrep 1: Question 2 Ferihere 6 18 Sep 2007, 08:40
2 GMATPrep questions Bluebird 16 21 Jul 2007, 07:39
2 questions from GMATPrep GMAT_700 4 24 Apr 2007, 14:12
Mean, Medium, SD Question Witchiegrlie 6 27 Mar 2007, 14:30
GMATPrep Question on SD shinewine 4 19 Aug 2006, 02:06
Display posts from previous: Sort by

GMATPrep 2 - SD question

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.