It is currently 17 Dec 2017, 03:54

### 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

# Q is a set of 10 numbers. What is the standard deviation of

Author Message
Manager
Joined: 19 Aug 2007
Posts: 202

Kudos [?]: 119 [0], given: 0

Q is a set of 10 numbers. What is the standard deviation of [#permalink]

### Show Tags

09 Jan 2008, 16:33
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Q is a set of 10 numbers. What is the standard deviation of Q if the range of Q is zero?

0
1
5
10
insufficient information

I can think of two situations that meet the above criteria; but the one I chose was wrong...OA to follow, thanks.

Kudos [?]: 119 [0], given: 0

Director
Joined: 08 Jun 2007
Posts: 575

Kudos [?]: 111 [0], given: 0

Re: standard deviation and range [#permalink]

### Show Tags

09 Jan 2008, 16:49
gmat blows wrote:
Q is a set of 10 numbers. What is the standard deviation of Q if the range of Q is zero?

0
1
5
10
insufficient information

I can think of two situations that meet the above criteria; but the one I chose was wrong...OA to follow, thanks.

range 0 means all numbers are same.
SD = 0

Kudos [?]: 111 [0], given: 0

Manager
Joined: 19 Aug 2007
Posts: 202

Kudos [?]: 119 [0], given: 0

Re: standard deviation and range [#permalink]

### Show Tags

09 Jan 2008, 16:55
sometimes, I just want to throw my brain across the room...

I was thinking of situations, when the set contains -a and a; i.e {-3, x, x, x, 3}, but of course, range is 6, not zero/

thanks.

Kudos [?]: 119 [0], given: 0

SVP
Joined: 28 Dec 2005
Posts: 1543

Kudos [?]: 190 [0], given: 2

Re: standard deviation and range [#permalink]

### Show Tags

09 Jan 2008, 17:25
ashkrs wrote:
gmat blows wrote:
Q is a set of 10 numbers. What is the standard deviation of Q if the range of Q is zero?

0
1
5
10
insufficient information

I can think of two situations that meet the above criteria; but the one I chose was wrong...OA to follow, thanks.

range 0 means all numbers are same.
SD = 0

Kudos [?]: 190 [0], given: 2

Re: standard deviation and range   [#permalink] 09 Jan 2008, 17:25
Display posts from previous: Sort by

# Q is a set of 10 numbers. What is the standard deviation of

Moderator: chetan2u

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