• Parameters are set of numbers.
    • STDEV(), estimates standard deviation based on a sample.


  • This function gives the Standard Deviation based on a given sample.
  • Standard Deviation is the quantity expressed by, how many members of a group differ from the mean value of the group.
  • It is the used as a measure of the dispersion or variation in a distribution.
  • It is calculated as the square root of variance.
  • In  , Parameters are set of numbers to find the Standard Deviation.
  • Here First parameter is required. From the second parameter are optional.
  • Instead of numbers, we can use the single array or a reference of a array.
  •   is defined by the formula:

where   is the sample mean of   and   is the total numbers of the given data.

  • It is calculated using   method.
  • This function is considering our given data is the sample of the population.
  • Suppose it should consider the data as the entire population, we can use the STDEVP function.
  • The arguments can be be either numbers or names, array,constants or references that contain numbers.
  • Suppose the array contains text,logical values or empty cells, like that values are not considered.
  • When we are entering logical values and text representations of numbers as directly, then the arguments are counted.
  • Suppose the function have to consider the logical values and text representations of numbers in a reference , we can use the STDEVA function.
  • This function will return the result as error when
     1. Any one of the argument is non-numeric. 
     2. The arguments containing the error values or text that cannot be translated in to numbers.


1 0 4 6 10 12 15
2 7 3 -1 2 25
3 9 11 8 6 15
  1. =STDEV(18,25,76,91,107) = 39.8660256358
  2. =STDEV(208,428,511,634,116,589,907) = 267.0566196431
  3. =STDEV(A1:F1) = 5.52871293039
  4. =STDEV(A2:D2) = 3.304037933599
  5. =STDEV(A3:B3) = 1.414213562373
  6. =STDEV(12,18,27,32,FALSE) = 12.617448236470002

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