A confidence interval is a mathematical concept that expresses how likely a range will contain the mean of a data set.

Assuming that the population is normally distributed, the Confidence Intervals table gives confidence intervals for the mean, standard deviation, and variance at the confidence coefficient specified.

This article presents an analysis of the small-sample distribution of a class of approximate pivotal quantities for a normal coefficient of variation that contains the approximations of McKay, David, ...

Several possible methods are presented for constructing confidence intervals for the means of normally distributed, dependent variables when nothing is known about the correlations. One, which uses ...