• Mean:
  The mean of a group of numbers is the average of the numbers.
  eg. 3, 5, 6, 8, 13. Add all the numbers together (3+5+6+8+13 = 35) then divide (35) by the number of numbers added together (5), so 35 ÷ 5 = 7.
• Median:
  The median of a group of numbers is the number that is exactly in the middle when the numbers are arranged numerically.
  eg. 3, 5, 6, 8, 12. The physical middle number is 6.
• Mode:
  The mode of a group of numbers is the number that appears most often.
  eg. 3, 5, 5, 6, 8, 12. The number that is the most common is 5.
• Range:
  The range of a group of numbers is the difference between the biggest number and the smallest number.
  eg. 3, 5, 6, 8, 12. The range is 12 - 3 = 9.

See our Teaching Resources for Math for worksheets, lesson plans, etc.

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