BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Stats problem!!

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 34
Joined: Sat Jan 15, 2011 5:17 am
Followed by:1 members

Stats problem!!

by abhinav khanna » Sun Apr 15, 2012 6:25 am
Hi all,
Can anyone of you guide me on how to find mode in a set with repeating numbers and -ve/+ve numbers. For instance:

Set A, B, and C consist of the following elements:
A {0, 3, 4, 2, 0, 4, 7, 8, 4, 17} B {20, 12, -7, -9, -5, -7, 11, -5, 68} C {-1.5, 0, 1.5}. If Z is
defined as the sum of modes of sets A, B, and C, what is the value of Z?

Thanks
Top
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 342
Joined: Wed Jul 08, 2009 8:50 am
Thanked: 214 times
Followed by:19 members
GMAT Score:740

by Birottam Dutta » Sun Apr 15, 2012 8:40 am
Mode of a set of numbers is the element in the set which occurs maximum number of times:

In set A, 4 is the mode.
In set B, both -7 and -5 are the modes (It is a bimodal set)
In set C, there is no mode.

Sum of the modes = 4 + (-5) + (-7) = -8.

Hope this is all right!
Top
Post new topic Post Reply
• Page 1 of 1