GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Jan 2019, 08:54

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • FREE Quant Workshop by e-GMAT!

     January 20, 2019

     January 20, 2019

     07:00 AM PST

     07:00 AM PST

    Get personalized insights on how to achieve your Target Quant Score.
  • Free GMAT Strategy Webinar

     January 19, 2019

     January 19, 2019

     07:00 AM PST

     09:00 AM PST

    Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

The bar graph below displays the number of temperature readings at eac

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52294
The bar graph below displays the number of temperature readings at eac  [#permalink]

Show Tags

New post 03 Jan 2019, 11:43
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

76% (01:42) correct 24% (01:03) wrong based on 17 sessions

HideShow timer Statistics

Image
The bar graph below displays the number of temperature readings at each value from a sample, measured in degrees Fahrenheit. What was the average (arithmetic mean) temperature reading?

A. 111 degrees Fahrenheit
B. 112 degrees Fahrenheit
C. 113 degrees Fahrenheit
D. 114 degrees Fahrenheit
E. 115 degrees Fahrenheit

Attachment:
Capture.PNG
Capture.PNG [ 48.81 KiB | Viewed 218 times ]

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

e-GMAT Representative
User avatar
D
Joined: 04 Jan 2015
Posts: 2456
The bar graph below displays the number of temperature readings at eac  [#permalink]

Show Tags

New post Updated on: 04 Jan 2019, 02:51

Solution


Given:
    • A bar graph, which displays the number of temperature readings at each value

To find:
    • The average temperature reading

Approach and Working:
    • Average reading = \(\frac{110(4) + 111(3) + 112(4) + 113(1) + 114(2) + 115(2)]}{(4 + 3 + 4 + 1 + 2 + 2)} = \frac{[110(4 + 3 + 4 + 1 + 2 + 2) + (3 + 8 + 3 + 8 + 10)]}{16} = \frac{[110(16) + 32]}{16} = 110 + 2 = 112\)

Hence, the correct answer is Option B

Answer: B

Image

_________________








Register for free sessions
Number Properties | Algebra |Quant Workshop

Success Stories
Guillermo's Success Story | Carrie's Success Story

Ace GMAT quant
Articles and Question to reach Q51 | Question of the week

Must Read Articles
Number Properties – Even Odd | LCM GCD | Statistics-1 | Statistics-2 | Remainders-1 | Remainders-2
Word Problems – Percentage 1 | Percentage 2 | Time and Work 1 | Time and Work 2 | Time, Speed and Distance 1 | Time, Speed and Distance 2
Advanced Topics- Permutation and Combination 1 | Permutation and Combination 2 | Permutation and Combination 3 | Probability
Geometry- Triangles 1 | Triangles 2 | Triangles 3 | Common Mistakes in Geometry
Algebra- Wavy line | Inequalities

Practice Questions
Number Properties 1 | Number Properties 2 | Algebra 1 | Geometry | Prime Numbers | Absolute value equations | Sets



| '4 out of Top 5' Instructors on gmatclub | 70 point improvement guarantee | www.e-gmat.com


Originally posted by EgmatQuantExpert on 04 Jan 2019, 02:17.
Last edited by EgmatQuantExpert on 04 Jan 2019, 02:51, edited 1 time in total.
Intern
Intern
avatar
B
Joined: 12 Apr 2011
Posts: 27
Location: United Arab Emirates
Concentration: Strategy, Marketing
Schools: CBS '21, Yale '21, INSEAD
GMAT 1: 670 Q50 V31
WE: Marketing (Telecommunications)
Re: The bar graph below displays the number of temperature readings at eac  [#permalink]

Show Tags

New post 04 Jan 2019, 02:26
Bunuel wrote:
Image
The bar graph below displays the number of temperature readings at each value from a sample, measured in degrees Fahrenheit. What was the average (arithmetic mean) temperature reading?

A. 111 degrees Fahrenheit
B. 112 degrees Fahrenheit
C. 113 degrees Fahrenheit
D. 114 degrees Fahrenheit
E. 115 degrees Fahrenheit

Attachment:
Capture.PNG


Another way to do it is, assume 110 as the average.

Add all the differences together

i.e. (110-110)*4 + (111-110)*3 + (112-110)*4 + (113-110)*1 + (114-110)*2 + (115-110)*2 = 0 + 3 + 8 + 3 + 8 + 10 = 32

Total number of readings = 16

Average increase = 32/16 = 2

Hence average = 110 + 2 = 112

Hence the correct answer is B.
_________________

Hit Kudos if you like what you see!

GMAT Club Bot
Re: The bar graph below displays the number of temperature readings at eac &nbs [#permalink] 04 Jan 2019, 02:26
Display posts from previous: Sort by

The bar graph below displays the number of temperature readings at eac

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

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®.