1c.01 Know the difference between population, sample frame and sample Quiz: Pearson Edexcel Statistics, Unit 1

The 20 questions

1. What term describes the entire group that a statistical study is about?

   • Variable
   • Sample
   • Population
   • Sample frame

2. What is a list or source from which a sample is drawn called?

   • Sample frame
   • Response rate
   • Primary source
   • Population

3. What is a subset of a population selected for an investigation called?

   • Quota
   • Census
   • Sample frame
   • Sample

4. Which is a suitable sampling frame for surveying all students at a school?

   • Local phone book
   • School register
   • Supermarket receipts
   • Staff noticeboard

5. If studying all Year 10 pupils, what represents the population?

   • The class register
   • The sample chosen
   • All Year 10 pupils
   • The survey respondents

6. Why is the choice of sample frame important in a survey?

   • Controls the budget
   • Sets the weather
   • Determines available members
   • Calculates the mean

7. What is the best sampling frame for surveying residents in a specific town?

   • Supermarket receipts
   • Registered addresses list
   • Local school register
   • Telephone directory

8. What limitation occurs when a sampling frame omits some members of the population?

   • Complete random selection
   • Potential sample bias
   • Guaranteed zero variance
   • Exact population size

9. A factory makes 5,000 items weekly and quality checks 200 items. What is the sample?

   • All 5,000 items
   • The factory workers
   • The 200 items checked
   • The weekly production

10. Using a telephone directory as a sampling frame misses which group of adults?

    • Employed adults
    • Registered voters
    • Unlisted numbers
    • Landline owners

11. Defining a population as customers buying in May clarifies what aspect of the study?

    • Sample size
    • Contextual meaning
    • Randomness
    • Sampling interval

12. Which of these represents a population rather than a sample?

    • Forty checked items
    • Ten tested bulbs
    • A surveyed subgroup
    • All factory output

13. What is the correct mathematical relationship between a population and a sample?

    • They are identical
    • Population is subset
    • Sample is larger
    • Sample is subset

14. What is the best sampling frame for all members of a sports club?

    • Membership list
    • Local telephone directory
    • Staff payroll
    • Street address registry

15. Which of these is a sample rather than a population?

    • Every factory product
    • All school pupils
    • Forty surveyed shoppers
    • All registered voters

16. A population has 4,000 members, and the sampling frame lists 3,600. Ten per cent of the frame is sampled. How many are sampled?

    • 360
    • 40
    • 3,600
    • 400

17. If a sampling frame lists 2,300 out of 2,500 students, which group cannot be sampled?

    • The 200 missing
    • All female students
    • All sixth formers
    • The 2,300 listed

18. Why must a researcher explicitly state their definition of the population?

    • To eliminate costs
    • To reduce sample size
    • To save time
    • Context determines results

19. A sample of 50 is drawn from a sampling frame of 600 people. What proportion of the frame is sampled?

    • 12%
    • 6.25%
    • About 6.3%
    • About 8.3%

20. What risk arises when a sampling frame excludes some members of the population?

    • Increased sample size
    • Guaranteed accuracy
    • Removed variability
    • Introduction of bias

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