Math 8 · Unit 6: Collecting data · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. Data you collect yourself is …

   • biased data
   • continuous data
   • primary data
   • secondary data
   Check

2. 2. Data from a website is …

   • a sample
   • discrete data
   • primary data
   • secondary data
   Check

3. 3. Height is …

   • categorical data
   • discrete data
   • continuous data
   • secondary data
   Check

4. 4. Number of brothers is …

   • discrete data
   • categorical data
   • primary only
   • continuous data
   Check

5. 5. Favourite colour is …

   • numerical data
   • discrete data
   • categorical data
   • continuous data
   Check

6. 6. Which is a leading question?

   • What is your favourite sport?
   • Which sport do you play most?
   • Don't you agree that football is the best sport?
   • How many hours of sport do you play a week?
   Check

7. 7. Options 0–5, 5–10, 10–15 hours. What is wrong?

   • nothing
   • they overlap at 5 and 10
   • they're too big
   • too many options
   Check

8. 8. Options 1–2, 3–4, 5–6 hours. What is wrong?

   • too few hours
   • they miss 0 and more than 6
   • they overlap
   • nothing
   Check

9. 9. Time to run 100 m is …

   • continuous
   • discrete
   • categorical
   Check

10. 10. Shoe size is usually treated as …

    • categorical
    • discrete
    • continuous
    Check

11. 11. A data collection sheet should …

    • use only words
    • have space to tally each option
    • mix all answers together
    • have no headings
    Check

12. 12. Which is a good survey question?

    • Do you read a lot?
    • How many books? 1–2, 2–3, 3–4
    • How many books did you read last month? 0, 1–2, 3–5, 6 or more
    • Reading is great, isn't it?
    Check

13. 13. Mass of apples is …

    • discrete
    • continuous
    • categorical
    Check

14. 14. Number of goals in a match is …

    • continuous
    • discrete
    • categorical
    Check

15. 15. Why might a question 'How much do you earn?' be a problem?

    • It is personal, so people may not answer honestly.
    • It has overlapping options.
    • It is too short.
    • It is a leading question.
    Check