Camille's measure of central tendancy

Friday, September 26, 2008


The mean



  • arrange the data in ascending order


  • the sum of all data over the number of data


Outlier


  • with an outlier the mean is less accurate "average"











The Median
  • arrange data in ascending order

  • find the middle number




2 Middle numbers?


  • add the to middle number up then divide by 2 or find the mean for the both of them.


Outliers?


  • the median takes out the outliers


The Mode
  • arrange the data in ascending order

  • most common number in the set of data






2 side points


  1. you can have more than one mode

  2. and you can have no mode

  • arrange the data in ascending order
  • subtract the smallest piece of data for the largest piece of dat

(Large Range = an outlier)


This is a video on mean, median, and mode



















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