Standard Deviation Formula

Sample Standard Deviation
The Sample Standard Deviation Formaula is  s= \frac{\sqrt{\sum{x-\bar{x}}^2}}{n-1}

Population Standard Deviation

The population standard deviation formula is s= \sqrt{\frac{n(\sum{x}^2)-(\sum{x})^2}{n(n-1)}}

Frequency Table : Standard Deviation

Frequency Table Standard Deviation is s= \sqrt{\frac{n[\sum(f \cdot {x}^2)]-[\sum(f \cdot x)]^2}{n(n-1)}}




Last Modified on September 7, 2013 by JoeStat

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