Drawing-Cumulative-Frequency-Diagrams Wjec-Eduqas Higher

Drawing cumulative frequency diagrams

What is a cumulative frequency diagram?

• A cumulative frequency diagram is a way of representing grouped continuous data

• A cumulative frequency diagram can be used to estimate other statistical values

  • For example the median, quartiles or percentiles

How do I draw a cumulative frequency diagram?

• This is best explained with an example

  • The times taken to complete a short general knowledge quiz taken by 50 students are shown in the table below:

    Time taken ( seconds)	Frequency
    	3
    	8
    	17
    	12
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