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

It is currently 27 Nov 2014, 20:18

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

1) DS:Is the standard deviation of the salaries of Company Y

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 08 Apr 2004
Posts: 137
Location: Corea
Followers: 1

Kudos [?]: 117 [0], given: 0

1) DS:Is the standard deviation of the salaries of Company Y [#permalink] New post 24 Aug 2004, 21:11
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
1) DS:Is the standard deviation of the salaries of Company Y’s employees greater than the standard deviation of the salaries of Company Z’s employees?
(1)The average (arithmetic mean) salary of Company Y’s employees is greater than the average salary of Company Z’s employees.
(2)The median salary of Company Y’s employees is greater than the median salary of Company Z’s employees.


2) DS:What is the value of v3 – k3?
(1) v k > 0
(2) v – k = 6
Senior Manager
Senior Manager
avatar
Joined: 22 Jun 2004
Posts: 394
Location: Bangalore, India
Followers: 1

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

Re: DS: Std Dev [#permalink] New post 24 Aug 2004, 21:47
My answers are (1) E and (2)E.

As for (1), neither the average nor the median gives any picture of deviations. Thus, both are insufficient. Thus E

In (2), I presume v^3 - k^3 is to be determined(cubed v - cubed k).

But v^3 - k^3 = (v-k) (v^2+vk+k^2)

Neither (1) nor (2) can give us the value. Both together also cannot give us any value. Thus E.

marine wrote:
1) DS:Is the standard deviation of the salaries of Company Y’s employees greater than the standard deviation of the salaries of Company Z’s employees?
(1)The average (arithmetic mean) salary of Company Y’s employees is greater than the average salary of Company Z’s employees.
(2)The median salary of Company Y’s employees is greater than the median salary of Company Z’s employees.


2) DS:What is the value of v3 – k3?
(1) v k > 0
(2) v – k = 6

_________________

Awaiting response,

Thnx & Rgds,
Chandra

Re: DS: Std Dev   [#permalink] 24 Aug 2004, 21:47
    Similar topics Author Replies Last post
Similar
Topics:
Is the standard deviation of the salaries of Company Y s alimad 3 01 May 2008, 09:21
2 Experts publish their posts in the topic Is the standard deviation of the salaries of Company Y s gluon 7 08 Sep 2007, 12:14
Q3: Is the standard deviation of the salaries of Company Y s jet1445 2 05 Jul 2007, 19:39
Is the standard deviation of the salaries of Company Y s girikorat 1 07 Nov 2006, 10:52
Is the standard deviation of the salaries of Company Y s apandey1 3 27 Sep 2005, 07:05
Display posts from previous: Sort by

1) DS:Is the standard deviation of the salaries of Company Y

  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®.