In a set of data, the quartiles are the values that divide the data into four equal parts. The median of a set of data separates the set in half. ... The interquartile range or IQR is the range of the middle half of a set of data. It is the difference between the upper quartile and the lower quartile.
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In a set of data, the quartiles are the values that divide the data into four equal parts. The median of a set of data separates the set in half. ... The interquartile range or IQR is the range of the middle half of a set of data. It is the difference between the upper quartile and the lower quartile.