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CA Foundation Unit 1-3: Exploring Data, Sampling & Linear Regression — practice questions

Explore 2 free Unit 1-3: Exploring Data, Sampling & Linear Regression questions in CA Foundation Statistics. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 1-3: Exploring Data, Sampling & Linear Regression questions and exercises with answers

Showing questions 1–2 of 2.

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
Show answer and solution

Correct answer: D. 7

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

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