Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

It is currently 19 Jul 2019, 03:17

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

If the list of integers from 1 to 10 is multiplied by 3, the median of

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

Hide Tags

Find Similar Topics 
Retired Moderator
User avatar
V
Joined: 27 Oct 2017
Posts: 1231
Location: India
Concentration: International Business, General Management
GPA: 3.64
WE: Business Development (Energy and Utilities)
If the list of integers from 1 to 10 is multiplied by 3, the median of  [#permalink]

Show Tags

New post 10 Aug 2018, 08:27
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

92% (01:36) correct 8% (02:09) wrong based on 29 sessions

HideShow timer Statistics


If the list of integers from 1 to 10 is multiplied by 3, the median of the new list will be how many times the average of that new list?
A. \(\frac{1}{3}\)
B. 1
C. 3
D. 9
E. 27

_________________
Senior SC Moderator
avatar
V
Joined: 22 May 2016
Posts: 3079
If the list of integers from 1 to 10 is multiplied by 3, the median of  [#permalink]

Show Tags

New post 10 Aug 2018, 09:09
gmatbusters wrote:
If the list of integers from 1 to 10 is multiplied by 3, the median of the new list will be how many times the average of that new list?
A. \(\frac{1}{3}\)
B. 1
C. 3
D. 9
E. 27

In an evenly spaced sequence,
Median = mean

Multiplying each term of an evenly spaced sequence (integers from 1 to 10) by the same number (3) produces another evenly spaced sequence.

The integers from 1 to 10 are evenly spaced consecutive integers.

The integers from 3 to 30 are evenly spaced consecutive multiples of 3.

In an evenly spaced sequence, the median equals the mean.

The median of the new list is how many times the average of that list?

Med = mean
\(\frac{Med}{mean}=1\)

Answer B


No need to do these calculations, but if unsure:
MEDIAN of new sequence = average of two middle terms
3, 6, 9, 12, 15, 16.5 18, 21, 24, 27, 30
MEAN of new sequence = \(\frac{First+ Last}{2}=\frac{3+30}{2}=16.5\)
You could also use the integers from 1 to 10, because "median = mean" applies to all evenly spaced sequences
Median: \(6.5\)
MEAN: \(\frac{(1 + 10)}{2} = \frac{11}{2} = 6.5\)
Median = (MEAN * 1)

_________________
SC Butler has resumed!
Get two SC questions to practice, whose links you can find by date, here.


Tell me, what is it you plan to do with your one wild and precious life? -- Mary Oliver
GMAT Club Bot
If the list of integers from 1 to 10 is multiplied by 3, the median of   [#permalink] 10 Aug 2018, 09:09
Display posts from previous: Sort by

If the list of integers from 1 to 10 is multiplied by 3, the median of

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





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne