Lesson 1c.04

1c.04 Population and sampling: a Quiz: Pearson Edexcel Statistics, Unit 1

20 questions

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Lesson 1c.04, Population and sampling: a: 20 multiple choice questions for the Pearson Edexcel GCSE Statistics (1ST0), Unit 1: The collection of data, written with Revision Ninja.

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The 20 questions

  1. Which sampling technique is generally non-random?

    • Random number sampling
    • Stratified random sampling
    • Simple random sampling
    • Quota sampling

  2. Which technique selects every kth member of a list after a random start?

    • Quota sampling
    • Opportunity sampling
    • Simple random sampling
    • Systematic sampling

  3. What is a key risk when using systematic sampling on ordered data?

    • Zero response rate
    • Excessive random noise
    • High sampling cost
    • Interval pattern coincidence

  4. Which technique gives every item an equal chance of selection?

    • Judgement sampling
    • Opportunity sampling
    • Quota sampling
    • Simple random sampling

  5. How can bias be best avoided when selecting a sample?

    • Convenience sampling
    • Arbitrary quotas
    • Opportunity selection
    • Appropriate technique

  6. What defines an appropriate sampling technique for a statistical investigation?

    • Guarantees 100% response
    • Removes sampling frame
    • Reduces bias
    • Maximises cost

  7. A systematic sample takes every 10th pupil from a list. What is the sampling interval?

    • 10
    • 9
    • 11
    • 100

  8. Which type of sampling uses interviewers to fill specific category quotas non-randomly?

    • Quota sampling
    • Random sampling
    • Stratified sampling
    • Systematic sampling

  9. A list of 1,000 customers is sampled by taking every 50th name from a random start. How many names are selected?

    • 100
    • 20
    • 1,000
    • 50

  10. What happens if a systematic sampling interval matches a data cycle?

    • Zero variance
    • Random stratification
    • Biased results
    • Perfect representation

  11. A researcher selects every 4th person entering a shop, starting from the 3rd. Which technique is this?

    • Simple random sampling
    • Systematic sampling
    • Opportunity sampling
    • Quota sampling

  12. Which term describes filling demographic quotas using available individuals?

    • Stratified sampling
    • Simple random sampling
    • Quota sampling
    • Systematic sampling

  13. What sampling method uses a fixed interval after a random start?

    • Quota sampling
    • Cluster sampling
    • Systematic sampling
    • Judgement sampling

  14. A systematic sample of 40 is taken from a list of 1,200. What is the approximate sampling interval?

    • 30
    • 12
    • 1,160
    • 40

  15. How is the starting point determined in systematic sampling?

    • Fixed interval
    • Chosen at random
    • Last item
    • First item

  16. A list has 245 items and a systematic sample of 20 is needed. Which interval is approximately right?

    • 20
    • 10
    • 25
    • 12

  17. What occurs if sample quota proportions differ from the population frame?

    • Increased accuracy
    • Biased sample
    • Stratified perfection
    • Random error removal

  18. Which non-random method matches a population profile using specific targets?

    • Quota sampling
    • Simple random sampling
    • Cluster sampling
    • Systematic sampling

  19. Which sampling method completely avoids bias from ordering in a list?

    • Systematic sampling
    • Quota sampling
    • Opportunity sampling
    • Simple random sampling

  20. A systematic sample with an interval of 25 gives 40 members. Roughly what is the population size?

    • 625
    • 40
    • 1,000
    • 1,250

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