Calculating the range of a numerical dataset is a fundamental mathematical procedure used to measure data dispersion. To calculate it, you follow a two-step formula. First, examine the dataset to find the highest number, known as the maximum value. Second, examine the dataset to find the lowest number, known as the minimum value. Once you identify both extremes, you subtract the minimum value from the maximum value (Maximum minus Minimum equals Range). For example, with numbers 3, 7, 12, and 20, the maximum is 20 and minimum is 3, yielding a range of 17.
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