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Grade 8 · Data Handling
Collecting & Organising Data
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Answer all questions. Show all your working — marks are awarded for method as well as the final answer.

  1. 1
    Is 'What is my height?' a statistical question? Why?
    (2)
  2. 2
    Define a population in statistics.
    (2)
  3. 3
    Why do we use a sample instead of the whole population?
    (2)
  4. 4
    You survey only your friends about school food. What is wrong?
    (2)
  5. 5
    What is wrong with the options '0–10, 10–20, 20–30'?
    (2)
  6. 6
    In a stem-and-leaf display, what value is stem 4 with leaf 6?
    (2)
    stemleaf2353148425751key: 2 | 3 means 23
  7. 7
    Data: 12, 15, 21, 24, 28, 33. Write the stems.
    (2)
  8. 8
    Tallies |||| |||| || represent what frequency?
    (2)
TOTAL: 16 marks
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