What is the range of the data set {2, 4, 4, 6, 8}?

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Range measures how spread out data are by looking at the distance between the smallest and largest values. In this set, the smallest value is 2 and the largest value is 8. Subtracting gives 8 − 2 = 6. The range is 6, which reflects how far apart the extremes are, regardless of the middle values.