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CA Foundation Statistics — practice by topic

Browse 2 questions across 1 Statistics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Statistics topics

Unit 1-3: Exploring Data, Sampling & Linear Regression (2)

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The mean of 5, 10, 15, 20, 25 isRead the answer and worked solution →The median of 7, 3, 9, 5, 11 (after ordering) isRead the answer and worked solution →

Worked practice questions

The mean of 5, 10, 15, 20, 25 is

  1. 14
  2. 20
  3. 16
  4. 15
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Correct answer: D. 15

Mean = (5+10+15+20+25)/5 = 75/5 = 15.

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The median of 7, 3, 9, 5, 11 (after ordering) is

  1. 9
  2. 11
  3. 5
  4. 7
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Correct answer: D. 7

Ordered: 3,5,7,9,11. The middle value (3rd of 5) is 7.

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How to practise

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  2. Open the question to check the correct answer and read its worked solution.
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