Statistics Tool
Confidence Interval Calculator
Calculate the confidence interval for a sample mean.
Enter Data
Formula
CI = x̄ ± Z * (s / √n)Where x̄ is the mean, Z is the Z-score (based on confidence level), s is the standard deviation, and n is the sample size.
Frequently Asked Questions
Is Confidence Interval Calculator free to use?+
Yes, Confidence Interval Calculator on Matheric is completely free to use. We believe in accessible education and utility for everyone.
How accurate is Confidence Interval Calculator?+
We use standard mathematical formulas and high-precision computing algorithms to ensure results for Confidence Interval Calculator are accurate for academic and professional use.
Can I use Confidence Interval Calculator on my phone?+
Yes! Confidence Interval Calculator 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 Confidence Interval Calculator 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!