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309 bytes removed ,  17:15, November 14, 2009
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Reverted edits by RyanMatthews (Talk) to last version by Qwestor
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which is the formula for a [[point estimate]] of the true standard deviation from a sample size of ''n''.  As such this [[statistical 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 [[statistical estimator]] itself has a variance which, as the formula indicates, decreases as the sample size increases.
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It may be important to consider the standard deviation is but ''a'' measure of dispersion, and not the only one.  For instance, a [[Cauchy distribution]] has an undefined standard deviation (or mean), yet a glance at its [[Probability density function | pdf]] suggests that it is not "infinitely" dispersed.
       
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