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median

by ruplun » Fri Jul 15, 2011 7:34 am
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The table shows the distribution of test scores for a group of management trainees.Which score interval contains the median of 73 scores?

a. 60-69
b. 70-79
c. 80-89
d. 90-99
e. Cannot b determined from the information above
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by MBA.Aspirant » Fri Jul 15, 2011 7:37 am
C) 80 -89
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by Anurag@Gurome » Fri Jul 15, 2011 10:13 am
Median of 73 scores must be the 37th score when all the scores are arranged in increasing or decreasing order. In the score interval 50-79 there are (2 + 10 + 16) = 28 scores. Hence the 37-th score is not in this interval.

But in the score interval 50-89 there are (2 + 10 + 16 + 27) = 55 scores. Hence the 37-th score is in the score interval 80-89.

The correct answer is C.
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