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Cumulative frequency means the
Number of frequencies
Sum of all the frequencies
Sum of all previous frequencies up to the current point
None of these
Cumulative frequency means the sum of all previous frequencies up to the current point.
l + , where cf is the
Cumulative frequency of the class succeeding the median class
Cumulative frequency of the class preceding the median class
Frequency of the class preceding the median class
Frequency of the median class
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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