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

 It is currently 04 May 2015, 18:33

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# For a certain set of n numbers, where n>1, is the average

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
VP
Joined: 22 Nov 2007
Posts: 1105
Followers: 7

Kudos [?]: 193 [0], given: 0

For a certain set of n numbers, where n>1, is the average [#permalink]  03 Mar 2008, 10:58
For a certain set of n numbers, where n>1, is the average (arithmetic mean)
equal to the median?
(1) If the n numbers in the set are listed in increasing order, then the
difference between any pair of successive numbers is 2.
(2) The range of the n numbers in the set is 2(n - 1).
VP
Joined: 22 Oct 2006
Posts: 1443
Schools: Chicago Booth '11
Followers: 8

Kudos [?]: 154 [0], given: 12

Re: statistics [#permalink]  03 Mar 2008, 11:05
D

just plugged in numbers
CEO
Joined: 29 Mar 2007
Posts: 2591
Followers: 16

Kudos [?]: 234 [0], given: 0

Re: statistics [#permalink]  03 Mar 2008, 11:42
terp26 wrote:
D

just plugged in numbers

Can you show how S2 is suff?
SVP
Joined: 28 Dec 2005
Posts: 1583
Followers: 2

Kudos [?]: 88 [0], given: 2

Re: statistics [#permalink]  03 Mar 2008, 12:26
i think its A. Stat 2 cant be suff on its on.

Lets say n=3, the range is then 2(2)=4. So, we have three numbers whose range is 4. I picked 1,2,5. Average of these values is 8/3, and median is 2.
Manager
Joined: 05 Feb 2007
Posts: 141
Followers: 1

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

Re: statistics [#permalink]  03 Mar 2008, 12:52
My answer is A.

statement 1.

2,4 A=3, M=3
2,4,6 A=4, M=4
2,4,6,8 A=7, M=7

statement 2.

5, range is 8

1,1,1,1,8

A= 2 2/5, M=1
Director
Joined: 14 Jan 2007
Posts: 780
Followers: 2

Kudos [?]: 71 [0], given: 0

Re: statistics [#permalink]  03 Mar 2008, 19:22
It's A.

Stmt1:
Evenly distributed numbers have mean and median same.

So Suff

Stmt2:
The given range does not enforce any rule about the spacing between numbers. Mean may or may not be same as Median.
So Insuff
CEO
Joined: 29 Mar 2007
Posts: 2591
Followers: 16

Kudos [?]: 234 [0], given: 0

Re: statistics [#permalink]  04 Mar 2008, 05:28
Ya I thought A as well.
Intern
Joined: 04 Mar 2008
Posts: 43
Followers: 0

Kudos [?]: 3 [0], given: 6

Re: statistics [#permalink]  04 Mar 2008, 11:48
i think its A
Re: statistics   [#permalink] 04 Mar 2008, 11:48
Similar topics Replies Last post
Similar
Topics:
3 For a certain set of n numbers, where n > 2, is the average (arithmet 4 14 Jan 2015, 01:50
6 For a certain set of n numbers, where n > 1, is the average 15 26 Feb 2014, 01:24
13 Z is the set of the first n positive odd numbers, where n is 6 14 Jun 2012, 03:08
1 For a certain set of N numbers where N>1 is the average (ari 2 31 Jan 2012, 08:31
4 For a certain set of n numbers, where n > 1, is the average 9 11 Mar 2009, 17:24
Display posts from previous: Sort by

# For a certain set of n numbers, where n>1, is the average

 Question banks Downloads My Bookmarks Reviews Important topics

 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®.