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​Q19: Question – Paper 1 – June 2018

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Content:

• Cumulative Frequency Graphs – Interquartile Range
• Cumulative Frequency Graphs – Estimating Values
• Comparing Box Plots​

Quizzes:​

• Cumulative Frequency
• Comparing Box Plots

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Question

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19)
​Type A batteries and type B batteries were tested.

​The cumulative frequency diagram shows information about the battery life of type A

19 a) ​Estimate the interquartile range for type A.

[2 marks]

19 b) ​Estimate the number of type A batteries that had a battery life of more than 1600 hours.

[1 mark]

​19 c) The box plot shows information about the battery life of type B.​

On average, which type had the greater battery life?
​Tick a box.

Using data from both diagrams, state how you chose your answer.

[2 marks]

Show answers