Confidence Intervals Calculator

A tolerance interval is a range that is likely to contain a specific proportion of a population with a certain level of…

This calculator constructs a confidence interval for the mean of a Poisson distribution based on the number of observed events. Simply fill…

A confidence interval for a correlation coefficient is a range of values that is likely to contain a population correlation coefficient with a certain…

A confidence interval for a population standard deviation is a range of values that is likely to contain a population standard deviation with a…

A confidence interval for a difference in proportions is a range of values that is likely to contain the true difference between two population…

A confidence interval for a difference between means is a range of values that is likely to contain the true difference between two population…

The standard error of a sample proportion can be calculated as: Standard error = √p(1-p) / n where: p is the proportion…

This calculator creates a confidence interval for a population mean using the following formula: Confidence Interval = x +/- z*(s/√n) where: x:…