Sami's Measures of Central Tendency

Monday, September 29, 2008





















mean : mean is the average

median : a value in an ordered set of values below and above which there is an equal number of values

mode : mode is the number that is represented by a number that is used the most in a set










range: is the difference between the lowest and highest values










eg. 5,7,21,13,15,69



assending order



5,7,13,15,21,69



mean: 5+7+13+15+21+69=130/6=21.66667






median: 5,7,13,15,21,69


13+15/2=14






mode: 5,7,13,15,21,69



no mode!!!!!






range: 5,7,13,15,21,69



5-69=64







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