Cumulative Frequency (AQA GCSE Maths): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is cumulative frequency best described as?
What is cumulative frequency best described as?
A running total of frequencies
Why is cumulative frequency useful in statistics?
Why is cumulative frequency useful in statistics?
It finds median and quartiles easily
If frequencies are 4, 9, and 20, what is the third cumulative frequency?
If frequencies are 4, 9, and 20, what is the third cumulative frequency?
33
What should the final cumulative frequency value equal?
What should the final cumulative frequency value equal?
The total number of items
When plotting cumulative frequency, which boundary do you use on the -axis?
When plotting cumulative frequency, which boundary do you use on the -axis?
Upper boundary of class interval
What is the S-shaped cumulative frequency curve called?
What is the S-shaped cumulative frequency curve called?
An ogive
To find the median from the graph, where do you go on the cumulative frequency axis?
To find the median from the graph, where do you go on the cumulative frequency axis?
Halfway up
If total frequency is 120, at what value on the -axis is the lower quartile ()?
If total frequency is 120, at what value on the -axis is the lower quartile ()?
30
How do you calculate the interquartile range (IQR)?
How do you calculate the interquartile range (IQR)?
What type of values do you get from a cumulative frequency graph of grouped data?
What type of values do you get from a cumulative frequency graph of grouped data?
Estimates, not exact values