Confidence Interval Calculator | WordPress Tool

Confidence Interval Calculator

Calculate the confidence interval for your sample data. Enter your sample statistics to determine the range in which the population mean is likely to fall.

Sample Mean (x̄)

Please enter a valid number

Standard Deviation (σ)

Please enter a positive number

Sample Size (n)

Sample size must be at least 2

Confidence Level

90%

95%

99%

Calculation successful! Results are ready.

Confidence Interval Results

Margin of Error (E)

0.00

Lower Bound

0.00

Upper Bound

0.00

0.00 ± 0.00

We can be 95% confident that the true population mean is between:

0.00 and 0.00

Interpretation

The confidence interval indicates that if we were to take many samples and build a confidence interval from each, approximately 95% of these intervals would contain the true population mean.

Your result is based on a sample size of n with a standard deviation of σ.