Target Test Prep's 2024 GMAT Focus Edition prep is discounted for the BTG community!

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

sd

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 789
Joined: Sun May 06, 2007 1:25 am
Location: Southern California, USA
Thanked: 15 times
Followed by:6 members

sd

by resilient » Sat Jun 21, 2008 11:31 am
Is there an easier way to do this?
Attachments
3.jpg
Appetite for 700 and I scraped my plate!
Top
Junior | Next Rank: 30 Posts
Posts: 22
Joined: Tue Jul 03, 2007 11:23 pm
Thanked: 1 times

by smashinonions » Mon Jun 23, 2008 6:51 pm
for the set of given numbers the avg is 4 and the SD is sqrt (10)

so among the given ans only (A) is close to the SD of 10

I solved it by plugging in choices.
------------------------------------------------------
Five years ago: GMAT - 740

Five years later: 1st Attempt - 620
GOING for 2nd attempt: Target - 740
Top
Legendary Member
Posts: 574
Joined: Sun Jun 01, 2008 8:48 am
Location: Bangalore
Thanked: 28 times

by vishubn » Tue Jun 24, 2008 10:34 pm
Anyone can put more light on this ??

cheers
Top
Master | Next Rank: 500 Posts
Posts: 171
Joined: Sat May 03, 2008 3:51 pm
Thanked: 8 times

by wawatan » Tue Jun 24, 2008 11:37 pm
what is the OA?

i thought the answer is B.

if the mean is 4 and you want the closest standard deviation, then you would want two data points closest to the mean with less dispersion....anyone else agree?
Top
Junior | Next Rank: 30 Posts
Posts: 10
Joined: Tue Jun 24, 2008 10:55 pm
Thanked: 1 times

by nareshattri » Wed Jun 25, 2008 12:59 am
Ans could be D. or E. :(

both results in SD of (7)^0.5 which is most near to earlier (8.0)^0.5

I think, I missed something but I'm not aware of it. Can anyone help me out?

Thanks,
Naresh
Top
User avatar
Legendary Member
Posts: 543
Joined: Fri Jan 18, 2008 1:01 am
Thanked: 43 times
GMAT Score:580

by codesnooker » Wed Jun 25, 2008 2:16 am
Check the following link:-

https://www.beatthegmat.com/shortcut-in- ... 10473.html

It may help you.
Top
Post new topic Post Reply
• Page 1 of 1