interquartile range
Noun
The difference between the first and third quartiles; a robust measure of sample dispersion.
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More examples (1)
A common way of expressing quartiles is as an interquartile range. The interquartile range describes the difference between the third quartile (Q3) and the first quartile (Q1), telling us about the range of the middle half of the scores in the distribution.
Noun
a measure of statistical dispersion, being equal to the difference between the upper and lower quartiles.
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From the set of data above we have an interquartile range of 3.5, a range of 9 - 2 = 7 and a standard deviation of 2.34.
Word forms
interquartile rangesIQR