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Middle/High School Algebra, Geometry, and Statistics (AGS)
9.7 Less Than Cumulative Frequency

Cumulative Frequency

There are two types of cumulative frequency
  • Less than type cumulative frequency
  • Greater than type cumulative frequency
Less than type cumulative frequency
The total frequencies of a particular class and all classes prior to that particular class is called the Less than type cumulative frequency of that class or simply the Cumulative frequency of that class.


The marks of 30 students of a class, obtained in a test out of 75, are given below:
42, 21, 50, 37, 42, 37, 38, 42, 49, 52, 38, 53, 57, 47, 29, 59, 61, 33, 17, 17, 39, 44, 42, 39, 14, 7, 27, 19, 54, 51.

A frequency table and a cumulative frequency table with equal class interval is formed.

Directions: Answer the questions based on the table above. Also write at least one example of your own.
Q 1: Which two class intervals have the same minimum frequency ?
IIst and VIth
Ist and Vth
Ist and VIIth
Ist and VIth

Q 2: What is the lower limit of the sixth class interval?

Q 3: The class mark of the seventh class interval is

Q 4: The cumulative frequency up to the fourth class interval is

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Question 6: This question is available to subscribers only!

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