Answers

2015-12-15T10:28:39+05:30
Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set

==>how to calculate<==
The cumulative frequency is calculated by adding each frequency from a frequency distribution table to the sum of its predecessors. The last value will always be equal to the total for all observations, since all frequencies will already have been added to the previous total
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2015-12-15T14:56:47+05:30
The total of all frequencies or the sum of frequencies so far is called the cumulative frequency.
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