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*Here <math> n1 </math> is required. <math> n2,n3,... </math> are optional.
*Here <math> n1 </math> is required. <math> n2,n3,... </math> are optional.
*Instead of numbers we can use the single array or a reference of a array.
*Instead of numbers we can use the single array or a reference of a array.
*<math> STDEV </math> is defined by the formula: <math>S.D= \frac {\sqrt(\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 numbers in the given data.
*<math> STDEV </math> is defined by the formula: <math>S.D= \frac {\sqrt(\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 numbers in the given data.
*It is calculated using <math>"n-1" </math> method.
*It is calculated using <math>"n-1" </math> method.
*This function is considering our given data is the sample of the population.
*This function is considering our given data is the sample of the population.