Statistics Calculator: Interquartile Range

Use this calculator to compute the interquartile range from a set of numerical observations.



Data is from: Population Sample



Interquartile Range Calculator

Instructions

This calculator calculates the interquartile range from a data set:

To calculate the interquartile range from a set of numerical values, enter the observed values in the box. Values must be numeric and separated by commas, spaces or new-line. Ignore the Population/Sample selector unless you intend to examine the variance or the standard deviation. Click on "Submit Data" submit the data. To clear the calculator click on "Reset".

What is the interquartile range

The interquartile range (IQR) is the difference between the third and the first quartiles. It is a measure of dispersion.

Interquartile calculation formula

This simple formula is used for calculating the interquartile range:

$IQR=x_U-x_L$

Where xU is the Upper quartile and xL is the Lower quartile



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