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

It is currently 28 Aug 2015, 00:09
GMAT Club Tests

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

Power Prep Question

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 12 Aug 2004
Posts: 33
Followers: 0

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

Power Prep Question [#permalink] New post 03 Oct 2004, 21:29
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

can any one explain the answer
Attachments

Picture2.jpg
Picture2.jpg [ 55.24 KiB | Viewed 487 times ]

Director
Director
User avatar
Joined: 16 Jun 2004
Posts: 893
Followers: 2

Kudos [?]: 29 [0], given: 0

 [#permalink] New post 04 Oct 2004, 00:07
For stem 1:
We can think of Two scenarios:
First scenario: S=(-3,-1,1,3,5). Here the mean = 5/5 = 1. Median =1
Second scenarion: S =(-3,-1,1,3,5,7). Here the mean = 12/6 = 2. Median =(1+3)/2 = 2. Same results. We can conclude that the avg = median. A firm Yes.

Thus, sufficient.

For stem 2:
Its given that the range is 2(n-1). Lets consider a 4 member set. We will then have the range as 2(4-1) =6. The set can be S= (1,0,0,7) which has Range = 6. The avg is not equal to Median here. The set can also be (0,3,3,6) again the range being 6. However, here, the avg = median. We cannot conclude that avg = median for sure with this stem. Thus Insufficient.

The answer is A.
Intern
Intern
avatar
Joined: 12 Aug 2004
Posts: 33
Followers: 0

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

 [#permalink] New post 04 Oct 2004, 06:00
GREAT EXPLANATION!
  [#permalink] 04 Oct 2004, 06:00
Display posts from previous: Sort by

Power Prep 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®.