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1. A measure of statistical dispersion, being equal to the difference between the upper and lower quartiles.
   "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.";
   - midspread, middle fifty

Derived forms: interquartile ranges

Type of: statistic

Encyclopedia: Interquartile range