x’s. Thus x = å xi . n 2m. It can happen that the list of value x1, x2, … , xn will involve duplications. Suppose that there are k different values and that we name them as v1, v2, …, vk . Let’s say that v1 occurs n1 times, v2 occurs n2 times, and so on. The data could then be reorganized to look like this: Value v1 v2 v3 . . vk TOTAL Now x = 1 n ån i Multiplicity n1 n2 n3 . . nk n vi . You will also see this as x = ån v ån i i . i The formulas in item 2 above are still correct, even if…
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