Ascending Cumulative Frequency Table

Mathematics — Second Preparatory

The frequency table and its classes

A frequency table presents grouped data in classes.
The frequency is the number of values that fall in each class.
A class such as “from 10 to less than 20” has 10 as its lower limit, and 20 as its upper limit, which is not included in the class.
To build an ascending cumulative frequency table, we form running totals that start from the first class.
The cumulative frequency of a class is its own frequency plus the frequencies of all the classes before it.
The table shows how many values are less than each upper limit.

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