# Manuals/calci/STDEVA

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**STDEVA()**

- Parameters are set of numbers.
- STDEVA(), estimates standard deviation based on a sample, including numbers, text, and logical values.

## Description

- This function gives the Standard Deviation based on a given sample including the logical value and text.
- Standard Deviation is a quantity expressing by how much the members of a group differ from the mean value for 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 x and n is the total numbers in the given data.

- It is calculated using "n-1" method.
- This function consider our given data as the sample population.
- Suppose it consider the data as the entire population, we can use the STDEVPA function.
- The arguments can be be either numbers or names, array,constants or references that contain numbers.
- Also we can give the text representations of numbers or logical values , like TRUE or FALSE, in a reference.
- Suppose the arguments containing TRUE which is evaluate as 1, and the arguments containing FALSE which is evaluate as 0.
- Suppose the array contains the empty cells and text values like that values are not considered.
- Suppose the function don't want to consider the logical values and text representations of numbers in a reference, we can use the STDEV 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.

## Examples

A | B | C | D | E | F | G | |
---|---|---|---|---|---|---|---|

1 | 208 | 428 | 511 | 634 | 116 | 589 | 907 |

2 | 18 | 25 | 76 | 91 | 107 |

- =STDEVA(A2:E2) = 39.8660256358
- =STDEVA(A1:G1) = 267.0566196431
- =STDEVA(4,8,TRUE) = 3.51188458428
- =STDEVA(12,18,27,32,false) = 12.617448236470002

## Related Videos

## See Also

## References