Mark's Measures of Central Tendancy

Saturday, September 27, 2008
Mean
  • Arrange the data in ascending order
  • The sum of all data divided by the number of data
  • with an outlier the mean is less accurrate "average"

Median

  • Arrange data in ascending order
  • Find the middle number
  • If there are 2 middle numbers you have to find the mean of them
  • Great to use if there is an outlier

Mode

  • Arrange data in ascending order
  • Find the data that occurs the most
  • You can have more than one mode
  • You can have no mode

Range

  • Arrange data in ascending order
  • Subtract the smallest number from the largest number
  • Large Range=Outlier

This is a video I found on MMM



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