Statistics Tool
Quartile Calculator (IQR)
Calculate Q1, Q2 (Median), Q3, and Interquartile Range (IQR).
Count: 10 items | Min: 10 | Max: 55
Q1
21.25
Median (Q2)
32.50
Q3
43.75
IQR
22.50
Σ The Formula
IQR = Q3 - Q1
Real World Examples
Box Plot
These 5 comparison points are used to create Box & Whisker plots.
Outliers
Data < Q1 - 1.5*IQR or > Q3 + 1.5*IQR are typically outliers.
# About This Calculator
Quartiles divide a rank-ordered data set into four equal parts.
- Q1: 25th Percentile
- Q2: 50th Percentile (Median)
- Q3: 75th Percentile
- IQR: Interquartile Range (midspread)
Frequently Asked Questions
Is Quartile Calculator (IQR) free to use?+
Yes, Quartile Calculator (IQR) on Matheric is completely free to use. We believe in accessible education and utility for everyone.
How accurate is Quartile Calculator (IQR)?+
We use standard mathematical formulas and high-precision computing algorithms to ensure results for Quartile Calculator (IQR) are accurate for academic and professional use.
Can I use Quartile Calculator (IQR) on my phone?+
Yes! Quartile Calculator (IQR) is fully responsive and optimized for all devices, including smartphones, tablets, and desktops.
Do you save my data?+
No. We prioritize your privacy. All calculations are performed in your browser or temporarily processed, and we do not store your personal input data.
How do I report a bug?+
If you notice any issues with Quartile Calculator (IQR) or have suggestions for improvement, please contact us via the link in the footer. We value your feedback!
Can I request a new feature?+
Absolutely. We are constantly expanding our toolset. Feel free to reach out with your requests, and we might build it next!
About
Quartiles divide a rank-ordered data set into four equal parts.
- Q1: 25th Percentile
- Q2: 50th Percentile (Median)
- Q3: 75th Percentile
- IQR: Interquartile Range (midspread)