It is currently 31 Oct 2020, 01:33
My Tests

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.

What was the average (arithmetic mean) rating of the durabil

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 13720
GRE 1: Q160 V160
Followers: 305

Kudos [?]: 3553 [0], given: 12681

CAT Tests
What was the average (arithmetic mean) rating of the durabil [#permalink] New post 05 Aug 2018, 02:35
Expert's post
00:00

Question Stats:

70% (02:28) correct 30% (02:05) wrong based on 10 sessions
Attachment:
pie.jpg
pie.jpg [ 151.77 KiB | Viewed 1141 times ]


Quote:
The bar graph above shows the numbers of people who were surveyed about a car in 5 counties. The pie chart above shows the distribution of how the people in County E rated the car for durability, where each person rated the car for durability with one of the integers 1, 2, 3, 4, and 5, where 1 is the worst and 5 is the best.



What was the average (arithmetic mean) rating of the durability of the car in County E?

A. 1.25

B. 1.42

C. 2.53

D. 2.84

E. 3.00
[Reveal] Spoiler: OA

_________________

- Do you want all the GRE Prep Club resources at a glance (sort of ) ?? Look at GRE Prep Club Official LinkTree page
- Do you want all the GRE Prep Club FREE resources in one spot ?? Look at Free GRE Materials - Where to get it!! (2020)
- Do you want all the FREE GRE tests on earth ?? Look at FREE GRE Practice Tests [Collection] - New Edition (2021)
- Do you want to know the GRE score in the Top 25 BS in 7 continents ?? Look at here The GRE average score at Top 25 Business Schools 2020 Ed.
- Need Practice 20 Free GRE Quant Tests available for free with 20 Kudos
- GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

2 KUDOS received
Active Member
Active Member
User avatar
Joined: 07 Jan 2018
Posts: 694
Followers: 11

Kudos [?]: 778 [2] , given: 88

Re: What was the average (arithmetic mean) rating of the durabil [#permalink] New post 05 Aug 2018, 03:37
2
This post received
KUDOS
There is no need to first find the number of people who were surveyed in country E. This is because the same number of people are divided by percentage for their ratings on durability. Hence,
mean = 0.22 * 5 + 0.3* 1 + 0.18* 2 + 0.08* 4 + 0.17*3
mean = 2.84. Percentage itself represents the weight of each rating.
_________________

This is my response to the question and may be incorrect. Feel free to rectify any mistakes
Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos

Manager
Manager
Joined: 27 Feb 2017
Posts: 188
Followers: 1

Kudos [?]: 78 [0], given: 15

Re: What was the average (arithmetic mean) rating of the durabil [#permalink] New post 05 Aug 2018, 17:38
amorphous wrote:
There is no need to first find the number of people who were surveyed in country E. This is because the same number of people are divided by percentage for their ratings on durability. Hence,
mean = 0.22 * 5 + 0.3* 1 + 0.18* 2 + 0.08* 4 + 0.17*3
mean = 2.84. Percentage itself represents the weight of each rating.


OH WOW! I took over 5minutes and did like each rating separately. Need to keep this in mind for next time
Display posts from previous: Sort by

What was the average (arithmetic mean) rating of the durabil

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.