mean, median and mode

• Calculating the mean


  1. Add all the numbers together

  2. Divide by the number of numbers
• The mean is a very common question in exams
• Anomalous results should not be included in the mean
• Median


  The middle value of a set of numbers
• Mode


  The number that appears most often in a set of data
• If no number appears more than once, there is no mode