To find range in a number set, subtract the smallest number from the largest. This is used to determine the size of the range and how close the numbers are to one another.
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A single number does not have a range so you cannot find it.
Find the smallest and the largest values/numbers. These form the range.
You need to know the domain in order to find the range.
The Inter-quartile range is the range of the middle half of the data. It is the difference between the upper and lower quartile.Example: 35,80,100 110,120,120,170,180.The Inter-quartile range would be 145-90 or 55To find the interquartile range, you:1) Arrange the data in numerical order.2) Then find the median of the data sets.3) Find the median of the top half and bottom half. (of the set of numbers)4) The groups you now have are "quartiles"5) Find the interquartile range. (subtract the smaller range from the range)
maximum number-minimum number = range