IQ Range Calculator
Quickly calculate quartiles and interquartile range from your data using our free online tool, suitable for students and professionals.

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About This Tool
The IQR (Interquartile Range) Calculator is an essential statistical tool designed for anyone analyzing datasets. It simplifies the process of calculating quartiles and interquartile range, providing instant, accurate results. Users input their raw numeric data into a text area—separated by commas, spaces, or line breaks—and the tool validates entries, ensuring all are numeric.
Once submitted, the calculator computes Q1, Q3, and the IQR, then displays results clearly in a dedicated panel. Additional features might include visual boxplots, exporting options, and handling large datasets for comprehensive analysis.
Ideal for students, researchers, data analysts, and businesses, this tool supports quick data summarization, outlier detection, and statistical reporting. It aids in education, academic research, quality control, and business reporting, making complex calculations accessible and straightforward.
Designed with a modern, minimal interface, the tool emphasizes usability: responsive layout, high contrast, and accessibility features like keyboard navigation and screen reader support. Users can easily reset inputs or copy results for further use.
How to Use
1. Paste or type your dataset into the data input area.
2. Click the 'Calculate' button.
3. View the quartiles (Q1 & Q3) and the interquartile range (IQR) in the results panel.
4. Optional: copy results or reset input for new data.

FAQs/Additional Resources
Find Quick Answers
What is the interquartile range (IQR)?
What types of data can I use with this calculator?
Can I visualize the data distribution?
Is this tool suitable for large datasets?
Can I export or share the results?
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