Sample Standard Deviation
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Revision as of 13:03, 7 July 2011 by Chris Lawrence (talk | contribs)
Revision as of 13:03, 7 July 2011 by Chris Lawrence (talk | contribs)
<math>s_y = \sqrt{\frac{\sum_{i=1}^n{(y_i-\bar{y})^2}}{n-1}}</math>