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

 It is currently 17 Jul 2019, 02:14

### 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

# What is the median value rolled by the white die? (Note: Die is the

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 56267
What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 00:39
00:00

Difficulty:

15% (low)

Question Stats:

80% (00:54) correct 20% (00:59) wrong based on 111 sessions

### HideShow timer Statistics

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:

ch7.sec11.bar2.gif [ 2.57 KiB | Viewed 1801 times ]

_________________
CEO
Joined: 20 Mar 2014
Posts: 2620
Concentration: Finance, Strategy
Schools: Kellogg '18 (M)
GMAT 1: 750 Q49 V44
GPA: 3.7
WE: Engineering (Aerospace and Defense)
What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 03:21
1
1
Bunuel wrote:

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:
ch7.sec11.bar2.gif

Based the graph the following are the sequences:

Number 1 is rolled 3 times, number 2 is rolled 4 times,umber 3 is rolled 4 times, number 4 is rolled 3 times, number 5 is rolled 3 times and number 6 is rolled 3 times for a total of 20 numbers.

or in other words: 1,1,1,2,2,2,2,3,3,3,3,4,4,4,5,5,5,6,6,6

Thus the median = $$\frac{T_{10}+T_{11}}{2}$$ = $$\frac{3+3}{2} = 3$$. B is the correct answer.
Retired Moderator
Joined: 29 Apr 2015
Posts: 830
Location: Switzerland
Concentration: Economics, Finance
Schools: LBS MIF '19
WE: Asset Management (Investment Banking)
What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 05:23
Bunuel wrote:

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:
ch7.sec11.bar2.gif

Since the question asks for the median, you can ignore the frequency. Median = (3+4) / 2 = 3.5

>> got it, wrong answer ...

Correct would be 3
_________________
Saving was yesterday, heat up the gmatclub.forum's sentiment by spending KUDOS!

PS Please send me PM if I do not respond to your question within 24 hours.
CEO
Joined: 20 Mar 2014
Posts: 2620
Concentration: Finance, Strategy
Schools: Kellogg '18 (M)
GMAT 1: 750 Q49 V44
GPA: 3.7
WE: Engineering (Aerospace and Defense)
Re: What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 05:27
reto wrote:
Bunuel wrote:

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:
ch7.sec11.bar2.gif

Since the question asks for the median, you can ignore the frequency. Median = (3+4) / 2 = 3.5

reto, why will you ignore the frequency? Frequency will determine what value will you get for the 10th and the 11th terms.

As mentioned in my post above, the distribution becomes:

Number 1 is rolled 3 times, number 2 is rolled 4 times,umber 3 is rolled 4 times, number 4 is rolled 3 times, number 5 is rolled 3 times and number 6 is rolled 3 times for a total of 20 numbers.

or in other words: 1,1,1,2,2,2,2,3,3,3,3,4,4,4,5,5,5,6,6,6

Median will be the average of the 2 terms mentioned in red.
Senior Manager
Joined: 28 Jun 2015
Posts: 286
Concentration: Finance
GPA: 3.5
Re: What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 05:48
The values rolled by the white die are (3,4,4,3,3,3). Hence, the median of (3,3,3,3,4,4) would be (3+3)/2 = 3. Ans (B).
_________________
I used to think the brain was the most important organ. Then I thought, look what’s telling me that.
CEO
Joined: 20 Mar 2014
Posts: 2620
Concentration: Finance, Strategy
Schools: Kellogg '18 (M)
GMAT 1: 750 Q49 V44
GPA: 3.7
WE: Engineering (Aerospace and Defense)
What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 05:52
1
FireStorm wrote:
The values rolled by the white die are (3,4,4,3,3,3). Hence, the median of (3,3,3,3,4,4) would be (3+3)/2 = 3. Ans (B).

What you are quoting are not the values rolled but the frequencies.

Values rolled are from 1-6 while frequencies for white die are 3 or 4 for the above values. The question is asking about the median VALUE and not frequency!
Intern
Joined: 08 Jul 2012
Posts: 46
Re: What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

24 Jul 2015, 12:36
1
Bunuel wrote:

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:
ch7.sec11.bar2.gif

from graph: white dice gets
number 1, 3 times
number 2, 4 times
number 3, 4 times
number 4, 3 times
number 5, 3 times
number 6, 3 times

total we have 20 times, hence median will be avg. of number on 10th and 11th time
Aces. order: 1,1,1,2,2,2,2,3,3,3,3,4,4,4,5,5,5,6,6,6

hence, median = 3

Ans. (B) 3.0
_________________
Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time. - Thomas A. Edison
Math Expert
Joined: 02 Sep 2009
Posts: 56267
Re: What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

26 Jul 2015, 12:21
Bunuel wrote:

What is the median value rolled by the white die? (Note: Die is the singular of dice.)

(A) 2.5
(B) 3.0
(C) 3.5
(D) 4.0
(E) 4.5

Kudos for a correct solution.

Attachment:
ch7.sec11.bar2.gif

800score Official Solution:

Look at just the white bars. Since there were 20 rolls, an even number, the median will be the sum of the 2 middle values divided by 2.

1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6

Since the two values are the same, the median is 3.

The correct answer choice is (B).
_________________
Non-Human User
Joined: 09 Sep 2013
Posts: 11667
Re: What is the median value rolled by the white die? (Note: Die is the  [#permalink]

### Show Tags

10 Aug 2018, 00:06
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: What is the median value rolled by the white die? (Note: Die is the   [#permalink] 10 Aug 2018, 00:06
Display posts from previous: Sort by