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The table above shows the distribution of test scores for a

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The table above shows the distribution of test scores for a [#permalink] New post 07 Apr 2012, 15:54
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Question Stats:

81% (01:33) correct 18% (00:21) wrong based on 48 sessions
SCORE INTERVAL----------------NUMBER OF SCORES

50-59-------------------------- 2
60-69--------------------------10
70-79--------------------------16
80-89--------------------------27
90-99--------------------------18

The table above shows the distribution of test scores for a group of management trainees. Which score interval contains the median of the 73 scores?

A. 60-69
B. 70-79
C. 80-89
D. 90-99
E. It cannot be determined from the information given.

Please explain your answer.
[Reveal] Spoiler: OA

Last edited by Bunuel on 07 Apr 2012, 16:07, edited 2 times in total.
Edited the question and added the OA
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Re: SCORE INTERVAL NUMBER OF SCORES - SOURCE GMAT PREP [#permalink] New post 07 Apr 2012, 16:04
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rpamecha wrote:
SCORE INTERVAL----------------NUMBER OF SCORES

50-59-------------------------- 2
60-69--------------------------10
70-79--------------------------16
80-89--------------------------27
90-99--------------------------18

The table shown above has distribution of test scores. Which score interval contains the median of the 73 scores?

A. 60-69
B. 70-79
C. 80-89
D. 90-99
E. Cannot be determined.

Please explain your answer.


Median of 73 data points is the middle term - 37rd score. First 3 score ranges cover total of 28 scores (2+10+16), 37rd will be in fourth range (it covers scores from 29 to 55).

Answer: C.
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GMAT Prep PS [#permalink] New post 23 Sep 2012, 23:27
Chk out question..I was not able to find the answer withing 1 min..got confused so posting it might be helpful
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Re: GMAT Prep PS [#permalink] New post 24 Sep 2012, 00:30
Since there are 73 scores so the median will be the 37th score from the starting.
Which will lie in the 80-89 interval sot eh answer will be C

Hope it helps!
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Re: GMAT Prep PS [#permalink] New post 24 Sep 2012, 02:59
cnshahare wrote:
Chk out question..I was not able to find the answer withing 1 min..got confused so posting it might be helpful


Merging similar topics. Please ask if anything remains unclear.

Also, please read and follow: rules-for-posting-please-read-this-before-posting-133935.html
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PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

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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. NEW!!! ,11 Mixed Questions NEW!!!, 12 Fresh Meat NEW!!!

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. NEW!!!, 11 New DS set. NEW!!!


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Re: The table above shows the distribution of test scores for a [#permalink] New post 09 Nov 2012, 07:47
we are asked to find the median of the 73 scores, which is the 37th term.

Now if we arrange the number of scores( not score intervals ) in ascending order as shown below which is what we do when we want to calculate the median of a number of terms:the Median term 37th falls in the 90-99 interval.

Confused as to , why we shouldn't arrange the frequency ( no. of scores in a particular interval ) in ascending order when calculating the Median.

50-59-------------------------- 2
60-69--------------------------10
70-79--------------------------16
90-99--------------------------18
80-89--------------------------27
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Re: The table above shows the distribution of test scores for a   [#permalink] 09 Nov 2012, 07:47
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