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How to Construct a Frequency Distribution Table

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What is Cumulative Frequency?

Cumulative frequency analysis is the analysis of the frequency of occurrence of values of a phenomenon less than a reference value.

Technically, a cumulative frequency distribution is the sum of the class and all classes below it in a frequency distribution. All that means is you’re adding up a value and all of the values that came before it.

Examples:

1. The marks of 200 students in a test were recorded and shown by the following frequency distribution.

Marks %

10 - 19

20 - 29

30 - 39

40 - 49

50 - 59

60 - 69

70 - 79

80 - 89

Number of Students

7

11

20

46

57

37

15

7

Construct the cumulative frequency table.

Also answer the following.

(i) How many students obtained less than 50 marks?

(ii) How many students obtained at least 60 marks?

Provide your answers by first creating your frequency distribution table

Click on the link provided to watch the video and use it to create your frequency distribution table for this question

After that, add your last column (cumulative frequency)

Use the table to draw the cumulative curve

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How to Construct a Frequency Distribution Table