# stdevIf
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Based on a conditional statement, the `stdevIf` function calculates the standard deviation of the set of numbers in the specified measure, grouped by the chosen dimension or dimensions, based on a sample. 

## Syntax
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```
stdevIf(measure, conditions)
```

## Arguments
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 *measure*   
The argument must be a measure. Null values are omitted from the results. Literal values don't work. The argument must be a field.

 *condition*   
One or more conditions in a single statement.