# STDEVX.SDAX Function (Statistical)

Estimates standard deviation based on a sample that results from evaluating an expression for each row of a table.

## Syntax

STDEVX.S ( <Table>, <Expression> )
Parameter Attributes Description
Table

The table containing the rows for which the expression will be evaluated.

Expression

The expression to be evaluated for each row of the table.

## Return values

Scalar A single decimal value.

The standard deviation of a sample population.

## Remarks

STDEVX.S assumes that the column refers to a sample of the population.

To compute the standard deviation with the entire population, use STDEVX.P.

## Related articles

• Statistical Patterns

DAX includes a few statistical aggregation functions, such as average, variance, and standard deviation. Other typical statistical calculations require you to write longer DAX expressions. Excel, from this point of view, has a much richer language. The Statistical Patterns are a collection of common statistical calculations: median, mode, moving average, percentile, and quartile. » Read more

## Related functions

Other related functions are:

Last update: Dec 7, 2019     » Show contributors

Contributors: Alberto Ferrari, Marco Russo

MSDN documentation: https://docs.microsoft.com/en-us/dax/stdevx-s-function-dax

DAX Conventions
• Use [measure] and never use table[measure]
• Use table[column] and never use [column]
• Space before ‘(‘ and ‘)’ and any operand and operator
• Space before an in-line argument
• Definitions in the first row, including the assignment
• Use ‘=’ to define calculated columns / tables
• Use ‘:=’ to define measures
Context Transition

This function performs a Context Transition if called in a Row Context. Click to read more.

Row Context

This expression is executed in a Row Context. Click to read more.

Iterator

Not recommended

The use of this function is not recommended. See Remarks and Related functions for alternatives.

Not recommended

The use of this parameter is not recommended.

Deprecated

This function is deprecated. Jump to the Alternatives section to see the function to use.

Deprecated

This parameter is deprecated and its use is not recommended.

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