Dean's Measures of Central Tendency

Monday, September 29, 2008
Mean
  • Arrange the data in ascending numerical order.
  • Add up all the data.
  • Divide the sum by how many pieces of data there are.

Median
  • Arrange the data in ascending numerical order.
  • Cross out the border numbers until you remain with one.
  • In the occasion of there being 2 numbers, you add them and then divide by 2.
( Sorry for the picture being on its side, i couldn't fix it. )


Mode
  • Arrange the data in ascending numerical order.
  • Find the most occurring number.
  • Note that it is possible to have more than one mode.

( I guess this one is the same as the last picture. )

Range
  • Arrange the data in ascending numerical order.
  • Subtract the lowest number from the highest number.


Here is a video that explains mean, median and mode :

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