Averages (mean, median, mode and range)

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This is about averages. It includes mode, median, mean and range. You can use it or show it to other people in a Maths lesson.

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Averages (mean, median, mode and range)

  1. 1. Averages
  2. 2. 32. The average age of the oldest starting line-ups in a World Cup game: When Germany played Iran in the 1998 finals in France, the average age was 31 years and 345 days.
  3. 3. Mean • The sum of all the values divided by the number of values. 7 8 11 3 11 7+8+11+3+11 = 5 40 = 5 8
  4. 4. Median • The median is the middle value when they are arranged in size order. 7 8 11 3 11 3 7 8 11 11
  5. 5. Mode • The mode is the most common value 7 8 11 3 11 3 7 8 11 11
  6. 6. Range • The range is difference between the highest and lowest value. 7 8 11 3 11 11 – 3 = 8
  7. 7. Find the mean, median and mode ages of the team and the range • MEAN The sum of all the values divided by the number of values. • MEDIAN The middle value when they are arranged in size order. • MODE The most common value. • RANGE The difference between the highest and lowest values.

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