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Range
The range shows the spread of a set of numbers. It is calculated by subtracting the smallest number form the largest number.
It means that the range is the highest to data point taken away from the lowest data point. That is how the whisker tells us about the data: the data fall between the highest and the lowest data point.
The data actually are splitting into four groups of Min, Q1, Median Q2, Q3, and Max
There are the range spread between the largest and the smallest.