Robin's Measures of Central Tendancy

Sunday, September 28, 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=Outlier

Here is a video i found about Mean , Median , and Mode








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