Changes

:<math>S_{n} = \sqrt {\sum(x - \bar x) \over n - 1}</math>

:<math>S_{n} = \sqrt {\sum(x - \bar x) \over n - 1}</math>

which is the formula for an [[estimator]] of the true standard deviation from a sample size of ''n''.  As such this estimator itself has a variance which, as the formula indicates, decreases as the sample size increases.

which is the formula for a [[point estimate]] of the true standard deviation from a sample size of ''n''.  As such this estimator itself has a variance which, as the formula indicates, decreases as the sample size increases.

[[category:statistics]]

[[category:statistics]]