Lower and Upper Confidence Limit Calculator
Lower and upper confidence limits are crucial in statistics, providing a range within which the true population parameter is likely to fall. This calculator helps you determine these limits with ease.
- Enter your sample size, confidence level, mean, and standard deviation.
- Click ‘Calculate’.
- View your results below the calculator.
The formula for calculating confidence limits is based on the standard error of the mean and the desired confidence level. The standard error is calculated as the standard deviation divided by the square root of the sample size.
| Confidence Level | Lower Limit | Upper Limit |
|---|---|---|
| 90% | … | … |
| 95% | … | … |
| 99% | … | … |
- Always use a confidence level that makes sense for your data.
- Ensure your sample size is large enough to provide accurate results.
- Consider using a t-distribution for small sample sizes.
What is the difference between confidence interval and confidence limit?
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