Inter-Quartile Range(IQR) Calculator, Formulas

Fast Output

IQR Formula

InterQuartile Range (IQR) = Third Quartile (Q3) - First Quartile (Q1)

Example of Interquartile range(IQR):

n x[n] Median Quartile
1 7 Q2=77
(median of whole table)
Q1=33
(median of upper half,
from row 1 to 6)
2 7
3 33
4 33
5 47
6 75
7 77
8 115
Q3=133
(median of lower half,
from row 8 to 13)
9 116
10 133
11 133
12 155
13 177

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