confidence limit

In statistics, a confidence limit refers to either the upper or lower endpoint of a confidence interval. A confidence interval itself is a range of values used to estimate an unknown population parameter.123

This range is determined by a chosen percentage, often 95%, known as the level of confidence. This level indicates how often the interval would capture the true population parameter if the sampling process were repeated many times.3

The interval is calculated by taking a sample statistic and adding or subtracting a margin of error. The margin of error is derived from the standard error of the estimate and a multiplier corresponding to the chosen confidence level. Factors influencing the width of a confidence interval include the confidence level, sample variance, and sample size.3