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Find the Find the meanmean, , median, modemedian, mode, , andand rangerange of a of a data set.data set.

**Terms to knowTerms to know**MeanMean-the sum -the sum of the data in a of the data in a data set data set divided by the divided by the number of number of itemsitems

MedianMedian-the middle -the middle number or the number or the average of the two average of the two middle numbers in a middle numbers in a data set when the data set when the data are arranged in data are arranged in numerical ordernumerical order

ModeMode

The most The most frequently frequently occurring item occurring item , or items, in a , or items, in a data set data set (some (some data sets do not have a data sets do not have a mode)mode)

RangeRange--the the difference difference between the between the greatest and the greatest and the least values in a least values in a data setdata set