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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.

Example

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: The cumulative frequency up to the fourth class interval is
5
8
15
1

Q 2: The tally marks for the class interval 10 - 20 would be
\
\\
\\\\
\\\

Q 3: The maximum number of students in the third class interval is
5
4
6
3

Q 4: The class mark of the seventh class interval is
55
75
65
90

Question 5: This question is available to subscribers only!

Question 6: This question is available to subscribers only!


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