Tools
Confidence Interval Calculator
How to Use
- Enter your sample mean, standard deviation, and sample size.
- Choose your desired confidence level (e.g. 95%).
- View the calculated confidence interval.
Frequently Asked Questions
What is a confidence interval?
A confidence interval is a range of values likely to contain the true population parameter, with a stated level of confidence like 95%.
Which confidence levels can I choose from?
Common options include 90%, 95%, and 99%, though other levels may also be available.
What inputs do I need to calculate a confidence interval?
You typically need the sample mean, standard deviation, and sample size to calculate the interval.
