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Maths (Higher)
Comparisons of numerical summaries of data

Starter quiz

  • The sum of the 10 data points in a data set is 180. The mean of this data set is ______.
    • '18' ✓
  • Match each summary statistic to its value for a data set of: 1, 3, 6, 10, 13, 15, 15.
    • mean
      ⇔
      9 ✓
    • median
      ⇔
      10 ✓
    • mode
      ⇔
      15 ✓
    • range
      ⇔
      14 ✓
  • In total, many people are there in this data set?
    In total, many people are there in this data set?
    • 4
    • 8
    • 9
    • 25  ✓
    • 72
  • The table shows the number of pets owned by some volunteers at an animal rescue centre. Calculate the mean number of pets.
    The table shows the number of pets owned by some volunteers at an animal rescue centre. Calculate the mean number of pets.
    • 2.44...
    • 5.5  ✓
    • 44
    • 80.66...
    • 242
  • This grouped frequency table shows the length of grass in different people’s gardens. What does the highlighted row of this grouped frequency table mean?
    This grouped frequency table shows the length of grass in different people’s gardens. What does the highlighted row of this grouped frequency table mean?
    • 15 people had grass 20 cm long, and 15 people had grass 40 cm long.
    • 15 people had grass 20 cm long.
    • 15 people had grass between 20 cm and 40 cm long.  ✓
    • 30 people had grass 15 cm long.
  • The average expected range of this data set is <span class="blank">______</span>.
    The average expected range of this data set is ______.
    • '580' ✓
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