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

 It is currently 11 Dec 2019, 22:15

### 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

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

# If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the number

Author Message
TAGS:

### Hide Tags

Current Student
Status: Chasing my MBB Dream!
Joined: 29 Aug 2012
Posts: 1096
Location: United States (DC)
WE: General Management (Aerospace and Defense)
If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the number  [#permalink]

### Show Tags

17 Feb 2016, 04:00
00:00

Difficulty:

15% (low)

Question Stats:

80% (01:16) correct 20% (01:19) wrong based on 55 sessions

### HideShow timer Statistics

If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the numbers in S than the median of the numbers in S?
(A) 1.0
(B) 1.5
(C) 2.0
(D) 2.5
(E) 3.0

_________________
Become a GMAT Club Premium member to unlock discounts

MBA, Class of 2020,
SVP
Joined: 06 Nov 2014
Posts: 1870
Re: If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the number  [#permalink]

### Show Tags

17 Feb 2016, 21:12
Gnpth wrote:
If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the numbers in S than the median of the numbers in S?
(A) 1.0
(B) 1.5
(C) 2.0
(D) 2.5
(E) 3.0

This is a good question to understand the difference between mean and median.

Mean: Average of all the numbers. (Sum of all the elements divided by the number of elements)
Median: Arrange the elements of the set in increasing order. If the number of terms is odd, the middle term is the median. If the number of terms is even, the average of middle two terms is the median

Coming to this question,
Mean = (1 + 7 + 18 + 20 + 29 + 33)/6 = 18
Median = (18 + 20)/2 = 19

Difference = 1
Option A
Manager
Joined: 24 Sep 2019
Posts: 78
Re: If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the number  [#permalink]

### Show Tags

24 Nov 2019, 14:06
Mean= average
(1+7+18+20+29+33)/6=18
Median= middle data point
Since there is an even number of data points, take the average of the 2 middle data points.
(18+20)/2=19
19-18=1
Ans=A
Re: If S = {1, 7, 18, 20, 29, 33}, how much less is the mean of the number   [#permalink] 24 Nov 2019, 14:06
Display posts from previous: Sort by