CBSE Class 10 Answered
doubt
Asked by akhileshnarayanan | 20 Feb, 2010, 09:38: PM
Expert Answer
Median is given by,
Median = l + [((n/2) - cf)/f] x h
n/2 = (5+x+20+15+y+5)/2
60/2 = (5+x+20+15+y+5)/2
x + y = 15 .............(1)
Median is 28.5, hence the median class is, 20-30.
Using the formula for median,
28.5 = 20 + [30 - (5+x)](10)/(20)
8.5 = [30 - (5+x)](10)/(20)
17 = 30 - (5+x)
x = 8
and from (1),
y = 7
Regards,
Team,
TopperLearning.
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