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Year 8 Maths — Data handling

Find the mean, median, mode and range of a set of data, and read information off a bar chart.

Name: ________________________

  1. 1.Seven children scored 3, 5, 5, 7, 8, 9 and 12. What is the median score?

  2. 2.A bar graph shows 7 blue cars and 5 white cars. How many more blue cars are there than white ones?

  3. 3.Find the range of 33, 18, 47 and 22.

  4. 4.This bar chart shows how many books a library lent out on four days. Tap the bar for the day it lent the most.

    Write the number of the part.

    1234

  5. 5.The mean of five numbers is 14. What do the five numbers add up to?

  6. 6.Sort each statement by whether it describes the mean or the mode.

    Groups: The mean · The mode

    • It is always a value taken from the list itself
    • A list can have more than one of them
    • Every value in the list changes it
    • The value that appears most often
    • One unusually large value pulls it upwards
    • Add every value up and divide by how many there are

  7. 7.A bar graph shows 4 red cars, 7 blue cars, 5 white cars and 4 black cars. How many cars are there altogether?

  8. 8.Find the median of 21, 8, 14, 30 and 11.

Answer key — Year 8 Maths — Data handling

  1. 1. 7
  2. 2. 2
  3. 3. 29
  4. 4. 2 — Tuesday
  5. 5. 70
  6. 6. Add every value up and divide by how many there are → The mean; The value that appears most often → The mode; Every value in the list changes it → The mean; A list can have more than one of them → The mode; One unusually large value pulls it upwards → The mean; It is always a value taken from the list itself → The mode
  7. 7. 20
  8. 8. 14