Box and Whisker Diagrams

The ‘box’, or rectangle, we can see in the diagram below contains 50% of the data, and the extremes of that box are the Q1 and Q3 quartiles: the median value of the data set is the Q2, second quartile, value. Each ‘whisker’ represents 25% of the data and the extremities of these whiskers are the minimum and maximum values of the data. ................
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