Johnny's central measures of tendency

Friday, September 26, 2008
mean:
  • data must be in ascending order
  • add all the data then divide by the how many there are
median
  • data must be in numerical order
  • find the middle number if there are two middle numbers you find the mean of them
mode
  • data must be in ascending order
  • the data that appears the most
  • you can have more than one mode, you can also have no mode
range
  • arrange the data in ascending order
  • subtract the smalls data to the largest data

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