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...Key vocabulary median mean mode modal class range statistics when we gather data end up with a mass of numbers these by themselves are meaningless they gain meaning perform calculations on the creating types statistic there which more important than any others whenever asked to describe population or compare two populations always use both averages and measures spread going be looking at finding from grouped frequency tables average value that occurs most often in put order is middle if values take add all together divide how many example following shows weekly wage sample some professional footballers calculate an estimate find...