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

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Stats problem!!

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 amFollowed by: 1 member
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
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 342
Joined: Wed Jul 08, 2009 8:50 amFollowed by: 19 members
Thanked: 214 times
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
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1