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Grade 8 · Data Handling
Collecting & Organising Data
WORKSHEET
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  / 26

Answer all questions. Show all your working — marks are awarded for method as well as the final answer.

  1. 1
    In a survey of 60 learners, 15 chose soccer as their favourite sport. Calculate the size of the soccer sector in a pie chart of the results.
    (3)
  2. 2
    Is 'What is my height?' a statistical question? Why?
    (2)
  3. 3
    Define a population in statistics.
    (1)
  4. 4
    Why do we use a sample instead of the whole population?
    (2)
  5. 5
    You survey only your friends about school food. What is wrong?
    (2)
  6. 6
    What is wrong with the options '0–10, 10–20, 20–30'?
    (2)
  7. 7
    In a stem-and-leaf display, what value is stem 4 with leaf 7?
    (1)
    stemleaf2353148425751key: 2 | 3 means 23
  8. 8
    Data: 12, 15, 21, 24, 28, 33. Write the stems.
    (2)
  9. 9
    Tallies |||| |||| || represent what frequency?
    (1)
  10. 10
    In a survey of 60 learners, 25 chose soccer. Calculate the angle of the soccer sector in a pie chart.
    (3)
  11. 11
    A pie chart of 90 learners has sectors of 120°, 100°, 80° and x. Calculate x and the number of learners it represents.
    (3)
  12. 12
    State TWO features a double bar graph must have.
    (2)
  13. 13
    Why would a pie chart be the WRONG choice for data where learners could pick more than one sport?
    (2)
TOTAL: 26 marks
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