Interquartile Range (IQR) Calculator
This calculator is designed to assist statisticians, data analysts, and students in computing the interquartile range (IQR) of a given data set. The IQR is a measure of statistical dispersion and is especially useful in identifying outliers in your data.
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Data Source and Methodology
All calculations are based on standard statistical formulas for interquartile range. For more information, consult Calculator Soup. All calculations strictly follow the formulas and data provided by this source.
The Formula Explained
IQR = Q3 - Q1
where Q1 is the first quartile and Q3 is the third quartile.
Glossary of Terms
- Quartile (Q1, Q3): Values that divide your data into quarters.
- Interquartile Range (IQR): The difference between the third and first quartiles.
Frequently Asked Questions (FAQ)
What is the Interquartile Range?
The interquartile range (IQR) is a measure of variability that describes the spread of the middle 50% of your data. It is the difference between the third quartile (Q3) and the first quartile (Q1).
How do I calculate the IQR?
To calculate the IQR, first arrange your data in ascending order, find the first quartile (Q1) and the third quartile (Q3), and then subtract Q1 from Q3.