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Math · Free Online Tool

Interquartile Range (IQR) Calculator

Determine non-parametric statistical dispersion, quartiles Q1/Q3, and Tukey outlier boundaries.

Presets:
INTERQUARTILE RANGE
10 Semi-IQR = 5
IQR (Q3 - Q1)
10
First Quartile (Q1)
6
Median (Q2)
12
Third Quartile (Q3)
16

Metric Distribution Analysis

IQR (Q3 - Q1) 10
First Quartile (Q1) 6
Median (Q2) 12
Third Quartile (Q3) 16

Frequently Asked Questions