# How to find the 1st and 3rd quartiles

Learn how to calculate the first and third quartiles of your data set with this easy step-by-step guide. Understand what quartiles are and why they are important in data analysis.

## Interquartile Range (IQR): What it is and How to Find it

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## Quartile Calculator

Discover how to quickly and easily calculate the 1st and 3rd quartiles by following our step-by-step instructions. Get the tools you need to accurately measure your data today!

## How do you find the first and third quartiles?

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To clear up a math equation, work through each step of the equation slowly and carefully. Check your work as you go to identify any mistakes. Once you have the correct answer, double check it to be sure.

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## 4.5.1 Calculating the range and interquartile range

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