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Cumulative frequency means the
Cumulative frequency means the sum of all previous frequencies up to the current point.
l + , where cf is the
cf is the cumulative frequency of the class preceding the median class.
Find the median class from the following data:
0-10
10-20
20-30
30-40
6
8
4
10
f
c. f.
14
18
28
n = 28
Hence, the median class is 10-20.
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