kimmy's measures of central tendency

Monday, September 29, 2008
















mean (:



arrange the data in ascending order




the sum of the numbers divided by how many numbers there are in the data


number of data




with an outlier the mean is less accurate " average"


median




arrange the data in ascending order



the middle number in the set of data



if there are 2 middle numbers you find the mean of them


great to use if there is an outlier

mode



arrange the data in ascending order



the most frequently used number in the data



you can have more then 1 mode and no mode


Range




arrange the data in ascending order



subtract the smallest data from the largest data



large range = outlier



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