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Calculating the mean from a grouped frequency table

The starter and exit quiz of the lesson “Calculating the mean from a grouped frequency table”, from the unit “Comparisons of numerical summaries of data” (Year 10 Maths) by Oak National Academy.

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Oak National Academy

12 questions

  1. The sum of the 10 data points in a data set is 180. The mean of this data set is ___.
  2. Match each summary statistic to its value for a data set of: 1, 3, 6, 10, 13, 15, 15.
  3. In total, many people are there in this data set?
  4. The table shows the number of pets owned by some volunteers at an animal rescue centre. Calculate the mean number of pets.
  5. 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?
  6. The average expected range of this data set is ___.
  7. What is the midpoint of this interval?
  8. An estimate for the total number of litres used by the 10 people who each used between 40 and 60 litres is ___ litres.
  9. Which of these statements are correct?
  10. A supermarket manager records the total number of shoppers each day for a month. The table shows her results.The estimate for the total number of shoppers in this data set is ___ shoppers.
  11. Both a and b are the totals of their columns. Which of these statements are correct?
  12. The table shows some pupils' marks in an exam. The estimated mean score to the nearest integer is ___ marks.

License: OGL

Calculating the mean from a grouped frequency table · Examplary