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

 It is currently 22 May 2015, 20:59

### 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

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

# If the mean of set is 20, what is the median of set ? 1.In

Author Message
TAGS:
Senior Manager
Joined: 08 Jan 2009
Posts: 329
Followers: 2

Kudos [?]: 90 [0], given: 5

If the mean of set is 20, what is the median of set ? 1.In [#permalink]  01 Oct 2009, 07:18
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
If the mean of set is 20, what is the median of set ?
1.In set there are as many numbers larger than 20 as there are numbers smaller than 20.
2.All numbers in set are even integers

To date i thought when a set of numbers is equally spaced then MEAN = MEDIAN.So knowing one you can find the other. when i saw statement two i picked it.

It gave an example it does not have to be .14,18,24,24 . The median is 21; 18,18,22,22. The median is 20.

My question : Is their a generalised condition we can add such that number of elements is odd and set of numbers is equally spaced then MEAN = MEDIAN. Please advise.
Senior Manager
Joined: 23 Jun 2009
Posts: 354
Location: Turkey
Schools: UPenn, UMich, HKS, UCB, Chicago
Followers: 5

Kudos [?]: 97 [0], given: 63

1)insuff.
There are 2 poss.

a)20 is a unit of this set. Then 20 becomes automatically the median (the number of units in the set is odd )
b)20 is not a unit of this set. Then we can not know the median. Because it means there are even number of element in the set and the median is the mean of the two element in the center. They may be 19 and 21 or 18 and 35.

2)insuff. No other info.

Together.
insuff.
We only know that 20 is not an element of this set. So the number of elements in this set is even. Thus it is same like the possibility b) in 1.
Senior Manager
Joined: 08 Jan 2009
Posts: 329
Followers: 2

Kudos [?]: 90 [0], given: 5

Thanks i get my mistake.

Mean = Median when all the numbers in the set are evenly distibuted. Sorry got confused

Stmt 2: says they are even numbers. No where they say they are evenly distributed.
Similar topics Replies Last post
Similar
Topics:
When median = mean, is the set always evenly spaced? 2 17 Nov 2013, 21:31
The mean of set S is 20. What is the median of set S? 1. In 4 14 May 2008, 02:15
The mean of set S is 20. What is the median of set S? 1. In 3 16 Feb 2008, 09:08
1 Set S = If the mean is a+b, what is the median 4 31 Jan 2008, 12:21
If the median of a nonempty set is negative, is the mean 7 13 Dec 2007, 13:50
Display posts from previous: Sort by