Cumulative frequency diagrams 2 (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main purpose of a cumulative frequency diagram?
What is the main purpose of a cumulative frequency diagram?
Interpret data and estimate
How do you find the number of items up to a certain value?
How do you find the number of items up to a certain value?
Draw a vertical line then a horizontal line
If 25% of people are aged 20 or less, and total is 100, what is the cumulative frequency at age 20?
If 25% of people are aged 20 or less, and total is 100, what is the cumulative frequency at age 20?
25
What is the key skill in reading from a cumulative frequency diagram?
What is the key skill in reading from a cumulative frequency diagram?
Drawing precise lines
The curve on a cumulative frequency diagram always:
The curve on a cumulative frequency diagram always:
Increases or stays constant
How can you estimate the maximum cost of the cheapest 26 laptops?
How can you estimate the maximum cost of the cheapest 26 laptops?
Identify the cost at 26 frequency
To find how many items are more than a certain value, you should:
To find how many items are more than a certain value, you should:
Subtract the cumulative frequency from total
What does the final point on the cumulative frequency curve indicate?
What does the final point on the cumulative frequency curve indicate?
Total number of items
When counting laptops costing more than £460, what step is necessary?
When counting laptops costing more than £460, what step is necessary?
Subtract 44 from total
A cumulative curve shows 57 laptops; cumulative at £460 is 44. How many cost more than £460?
A cumulative curve shows 57 laptops; cumulative at £460 is 44. How many cost more than £460?
13 laptops