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<math>S.D= \sqrt \frac {\sum(x-\bar{x})^2}{(n-1)} </math>
<math>S.D= \sqrt \frac {\sum(x-\bar{x})^2}{(n-1)} </math>
where <math> \bar{x} </math> is the sample mean of <math> x </math> and <math> n </math> is the total number in the given data.
where <math> \bar{x} </math> is the sample mean of <math> x </math> and <math> n </math> is the total number in the given data.
*It is calculated using <math> "n" </math> method.
*It is calculated using <math> n </math> method.
*This function is considering our given data is the entire population.
*This function is considering our given data is the entire population.
*Suppose it should consider the data as the sample of the population, we can use the [[Manuals/calci/STDEVA| STDEVA]] function.
*Suppose it should consider the data as the sample of the population, we can use the [[Manuals/calci/STDEVA| STDEVA]] function.